Frederic J. Brown / AFP - Getty Images

Rihanna.

Get well soon, Rihanna! The 25-year-old singer has had to cancel her "Diamonds World Tour" show in Houston, Texas on Monday, April 15 due to illness.

PHOTOS: Rihanna through the years

Live Nation released a statement on Monday (via The Associated Press ) saying Rihanna is unable to perform "as a result of illness." Fans have been told to hang onto their tickets to use at a rescheduled show.

PHOTOS: Rihanna and Chris Brown through the years

Last month, the "Diamonds" singer was forced to cancel two dates after contracting laryngitis. She issued a heartfelt apology to her fans on Twitter, saying, "This is the hardest thing for me to deal with! I feel like we've been waiting on this day forever, and I'm hurt that I let you down. I hate disappointing people that never ever let me down!! I'm so embarrassed about this! Thank you for your prayers and well wishes!"

PHOTOS: Rihanna's best hairstyles

Rihanna has yet to tweet a personal announcement to her fans after canceling her April 15 show. She is next scheduled to perform in Dallas, Texas on April 16.

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If you ever wanted six-pack abs on your way to being named the Sexiest Man Alive, or if you crave the toned legs and flat belly of an international pop superstar, a trip to your nearest fast-food establishment may be in order.

Startraks, FameFlynet

Ryan Reynolds, left, gets his Burger King on during a break from filming in New York this week. Britney Spears grabs KFC to go in Thousand Oaks, Calif., on March 19.

If that doesn't make sense, then neither does Ryan Reynolds walking down the street with Burger King to go, or Britney Spears hauling a bag of KFC across a parking lot. We know stars are supposed to be "just like us," but have you seen us? We don't look like them.

Let's just assume that Reynolds and Spears ate whatever was in those bags. Instead of collapsing into a cheeseburger coma in front of "South Park," it's safe to say these two burned it off. Probably before the bags hit the trash. (In Reynolds' case, the task may have been a little easier. A publicist tied to the actor called Friday to say that's just a turkey burger and unsweetened iced tea!)

Albert Michael / startraksphoto.com

No Coke. Pepsi. Actress Denise Richards at Arby's.

Celebs with six-packs under their shirts and not in their shopping carts get that way thanks to a strict diet-and-exercise routine. And there's a good chance that both of those disciplines are maintained under the watchful eye of well-paid personal chefs and trainers. It also doesn't hurt to go the "kale and dust" route if fitting into a catsuit is in your job description.

So those of you envisioning looking like any of these people because you eat at the same drive-thru, take note. Joy Bauer, nutrition and health expert for TODAY, says "limit fast food outings to once per week, and alternate fattening fare with healthier offerings like grilled chicken salads, turkey burgers, and snack wraps."

If the thought of a snack wrap taking the place of your bacon-double sounds unappetizing, Bauer crunches some numbers for you.

She says to pay penance for a Burger King Whopper (630 calories), large fries (500 calories), and 40-ounce soda (380 calories) -- totaling 1,510 calories -- you would have to:

• run for 2 hours straight, or
• swim for 4 hours, or
• bike for 2 hours, or
• play full-court basketball for 2 hours

INFphoto.com

Rihanna hits the drive thru at a fast food joint in her native Barbados.

If you scarf down KFC's Original Recipe chicken-thigh value box (540 calories), a side of mashed potatoes with gravy (120 calories), and 30-ounce sweetened iced tea (260 calories) -- totaling 920 calories -- you'd need to: 

• spin for one hour and 10 minutes, or
• walk for 3 hours, or
• hit the dance floor and boogie down for an hour and a half, or
• do yoga for 5 hours straight!

"Celebs have cravings just like everyone else ... and when they succumb to fast food faves -- just like us mortals -- they must work hard to burn off the calorific splurges," Bauer says.

Maybe you're burning calories right now at the thought of Ryan Reynolds burning calories to work off his meal. Maybe the thought of his wife, Blake Lively, in a swimsuit is enough to motivate him to stay in shape. We know she'd never eat ... aw, forget it!

Who's making a food run?

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Target Presse Agentur Gmbh / Getty Images

Rihanna.

Rihanna's entourage had a slight delay. While making the drive from Canada to Detroit, Mich., for her "Diamonds World Tour," one of a RiRi's tour buses was stopped by U.S. Border Patrol after they got a whiff of what smelled like weed on someone.

And no, it wasn't Rihanna.

Kris Grogan of U.S. Customs and Border Protection tells E! News that "at approximately 9 a.m. this morning, a caravan of 10 charter buses claiming association with the singer Rihanna attempted to cross in Detroit at the Ambassador Bridge.

"During primary inspection a U.S. Customs and Border Protection (CBP) officer referred the buses for a secondary inspection due to the strong odor of marijuana emanating from one of the buses." 

Rihanna gets sexy to support Comic Relief

Grogan added that during the second inspection, a drug-sniffing dog alerted the presence of drugs on one of the passengers.

"A search of the individual resulted in the discovery of a small amount of marijuana and civil penalty assessed," he continued, and noted that the individual was not the singer (who was not even in the traveling party). The tour buses, along with the individual, were allowed to continue driving through to the States.

Did you know these Hollywood celebs get high?

RiRi performed in Toronto on Tuesday and has a show scheduled at the Joe Louis Arena in Detroit tomorrow.

-- reporting by Holly Passalaqua 

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Michael Parmelee / NBC

Hip-hop star Caleb Bryant (guest Eugene Jones) finds himself in trouble with Det. Nick Amaro (Danny Pino) on the Feb. 27 episode of "SVU."

"Law & Order" is famous for its "ripped from the headlines" plots, and it looks like next week's episode may be borrowing from the saga of musicians Chris Brown and Rihanna.

"A promising singer is brutally attacked by her boyfriend, a popular hip-hop star. ADA Barba (guest star Raul Esparza) works to build a case, but the victim refuses to aid the prosecution, and despite Det. Benson's best efforts, continues to put herself in danger," NBC's description of the episode, titled "Funny Valentine," reads.

Brown assaulted girlfriend Rihanna on the eve of the 2009 Grammy Awards. He subsequently pleaded guilty to one count of assault and was sentenced to five years of probation and community service. The two stars broke up for a time, but recently rekindled their romance, snuggling together in front of cameras at the Grammys earlier this month.

NBC did not reply to a request for comment.

A teaser from "SVU" also seems to hint that Rihanna and Brown were the inspiration of this latest "L&O" tale. "A familiar story of two celebrities intertwined by abuse," the voiceover says. 

But it looks like there will be a twist, as is common with the popular police procedural. The clip that aired as Wednesday's episode ended seems to suggest that the abuser may end up as a homicide victim.

The episode will also guest star talk-show host Wendy Williams as pretty much herself. "I am playing a talk-show host, and guess what her name is: Wendy Williams," she said on her show Feb. 4. Jane's Addiction guitarist Dave Navarro is also guest starring, but instead of a rock star, TV Guide reports he'll be playing a sound engineer named Ferrari. Gossip blogger Perez Hilton is also appearing.

"Law & Order: SVU" airs at Wednesdays at 9 p.m. on NBC.

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Better let the water out soon, Rihanna, your fingers and toes will wrinkle up and you'll get cold. The singer performed her new song "Stay," a duet with Mikky Ekko, Sunday night at the Grammys, and on Monday, the video was released.

In the video, Rihanna undresses and slips nude under the cloudy waters of an old-fashioned bathtub while the song plays, singing while looking sleepy and somewhat shell-shocked.

The video's fairly safe for work -- you don't actually see anything other than a fuzzy outline of her backside in the bath -- but it's very sensual. Scenes cut back and forth between Rihanna and Louisiana-born singer Ekko, who is seen in the same bathroom without Rihanna -- though he gets to keep his clothes on.

"The video was really, really simple," Rihanna told E! "I pretty much stayed put in the bathtub."

The emotional ballad is from her new album "Apologetic," and the single has already charted at No. 4 in the U.K. We're guessing the sexy video will only help it climb the charts in the U.S.

Slideshow: The rise of Rihanna

Evan Agostini / AP

Launch slideshow

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Christopher Polk/Getty Images

Chris Brown and Rihanna cuddled up at the Grammys.

If there is one couple defying the lyrics of Taylor Swift's opening Grammy number, "We Are Never Ever Getting Back Together," it is Rihanna and Chris Brown.

Pictured here in the crowd at Sunday's awards, the two looked oh-so cozy, and about a million years away from their infamous physical altercation that took place on the eve of the Grammy awards in 2009.

Christopher Polk/Getty Images

The pair have recently made it clear they are back together.

The couple have recently posted scores of Instagram photos proving they are back together, and Rihanna has been speaking out about her affection for the man who once plead guilty to assaulting her. "I still love" Brown, she told Oprah in an interview.

She also talked to Rolling Stone in its Jan. 31 issue about reuniting with Brown, telling the magazine that "even if it's a mistake, it's my mistake."

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Jordan Strauss / AP file

Over at MTV's Video Music Awards, sideboob may actually be required for stars like Miley Cyrus to gain access to the red carpet.

As awards season rolls on, we were getting excited for this Sunday's Grammy Awards, if for no other reason than the red carpet always manages to be a bit more of a skin-baring spectacle than say, the Oscars. But CBS has dragged a needle across that record with a memo detailing why sideboob won't be tolerated for this telecast.

The network is requesting that all talent appearing on camera take steps to be "adequately covered." Buttocks, female breasts, bare fleshy under curves of the buttocks and buttock crack, bare sides or under curvature of the breast, breast nipples and the genital region are all listed as "problematic." Oh, and no lapel pins backing any organized cause (stuck on those lapels you're not wearing to cover your chest).

Deadline.com offered up the fleshed-out advisory, and it's an entertaining read:

Date: February 5, 2013, 10:39:56 PM EST
Subject: 55th GRAMMYS: Standard And Practice Wardrobe Advisory
-kindly confirm receipt of s&p standards-
***GRAMMYS 2013***

CBS Program Practices advises that all talent appearing on camera please adhere to Network policy concerning wardrobe.

Please be sure that buttocks and female breasts are adequately covered. Thong type costumes are problematic. Please avoid exposing bare fleshy under curves of the buttocks and buttock crack. Bare sides or under curvature of the breasts is also problematic. Please avoid sheer see-through clothing that could  possibly expose female breast nipples. Please be sure the genital region is adequately covered so that there is no visible “puffy” bare skin exposure. Please avoid commercial identification of actual brand name products on T-shirts. Foreign language on wardrobe will need to be cleared. OBSCENITY OR PARTIALLY SEEN OBSCENITY ON WARDROBE IS UNACCEPTABLE FOR BROADCAST. This as well, pertains to audience members that appear on camera. Finally, The Network requests that any organized cause visibly spelled out on talent’s wardrobe be avoided. This would include lapel pins or any other form of accessory.

Perhaps CBS saw enough televised flesh for one month during last Sunday's Super Bowl halftime show. Some complained that a gyrating, leather-clad Beyonce only lacked a stripper pole to complete her act.

But in an age when Grammy regular Rihanna is posting a sexy new photo to Instagram every other day, we're skeptical of CBS' ability to bring us less boob with our tube. This was the event, afterall, that made Jennifer Lopez and her cut-to-here Versace gown a worldwide phenomenon. And that was way back in 2000! Before nudity was a thing!

Remember Pink's 2010 Grammy performance of "Glitter in the Air"? She left most of her clothing on the ground and rose above the audience for a dripping wet, aerial act that exposed all kinds of "problematic" buttock. Cirque-du-no-way is that OK.

On TODAY Thursday morning, Hoda Kotb and Kathie Lee Gifford laughed their way through a segment on the memo as Kotb held up a New York Daily News article headlined "CRACKDOWN." "I think telling rock stars how to dress is probably not a great idea," Kotb said. "Because now it's teeing it up for what will definitely be people showing more." 

On Twitter, users lost their shirts in the rush to call attention to CBS' request.

"This really is the best corporate memo ever written about, pardon my language, "female breast nipples," said @nprmonkeysee.

"That CBS Grammy memo about not wearing revealing outfits makes me 95% less interested in watching the Red Carpet coverage. :-(" wrote @dmachado.

If you do still want to watch, the Grammy Awards air Sunday night at 8 p.m. ET on CBS. Dress appropriately.

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Terry Richardson / Rolling Stone

Rihanna on Rolling Stone's cover.

Rihanna has opened up like never before about getting back together with her ex-boyfriend, Chris Brown, and what it means for her public image.

"I decided it was more important for me to be happy," she tells contributing editor Josh Eells in the new issue of Rolling Stone, out Friday, Jan. 31st. "I wasn't going to let anybody's opinion get in the way of that. Even if it's a mistake, it's my mistake. After being tormented for so many years, being angry and dark, I'd rather just live my truth and take the backlash. I can handle it."

On the Cover: Rihanna's crazy in love

The couple's public reconciliation comes less than four years since Brown assaulted Rihanna the night before the 2009 Grammy Awards. Brown plead guilty to assault and performed community service, but he remains on probation.

"When you add up the pieces from the outside, it's not the cutest puzzle in the world," Rihanna says. "You see us walking somewhere, driving somewhere, in the studio, in the club, and you think you know. But it's different now. We don't have those types of arguments anymore. We talk about s---. We value each other. We know exactly what we have now, and we don't want to lose that."

From the Archives: Rihanna, Queen of Pain: Sexting, bad boys and her attraction to the dark side (2011)

And Rihanna says that if Brown were ever to display a hint of his past behavior towards her, she is ready to walk. "He doesn't have the luxury of f------ up again," she says. "That's just not an option. I can't say that nothing else will ever go wrong. But I'm pretty solid in the knowing that he's disgusted by that. And I wouldn't have gone this far if I ever thought that was a possibility."

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Courtside Christmas! Rihanna and Chris Brown celebrated Christmas together by attending the Los Angeles Lakers vs. New York Knicks game at the Staples Center Tuesday, Dec. 25.

PHOTOS: On again couples

They were "laughing and chatting" an eyewitness tells Us Weekly. The twosome, who sat courside together, "looked happy together," the source adds.

PHOTOS: Rihanna through the years

Rihanna, 24, wore a midriff-baring black top to the game and black pants. Brown, 23, also dressed in all black with a leather jacket.

PHOTOS: Rihanna's sexy bikini body

The exes have been spending more time together recently and tweeting Instagram photos together. But the "We Found Love" singer alluded she was single on Twitter Dec. 18 by tweeting an E-card that read, "Being single sucks. The only thing I get to do anymore is whatever the [expletive] I want to do."

Danny Moloshok / Reuters

Rihanna, right, leans her head on Chris Brown as they sit together at the NBA basketball game between the New York Knicks and Los Angeles Lakers in Los Angeles on Tuesday, Dec. 25.

Danny Moloshok / Reuters

Alex Gallardo / AP

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If you spent a lot of time and money listening to and accumulating the year's hottest pop hits, a new video mashup might make you wonder if it was all worth it. Sigh. Oh, sorry. Meant to say PSY.

We're not saying that because the crop of music in 2012 was particularly bad. (Someone is no doubt saying that, probably very loudly, but it's not us). We're just saying that when cobbled together into one 8-minute superhit, the year's music all sounds pretty much the same. You could have waited for this one song.

"Pop Danthology 2012" by Daniel kimaginati0n Kim features more than 50 songs and their accompanying video clips. Adele, Chris Brown, Rihanna, Katy Perry, One Direction, Ke$ha, Flo Rida, Kelly Clarkson, Maroon 5, Pink, Justin Bieber and PSY are some of those who made the cut.

How many times did you hear "Gangnam Style" or "Call Me Maybe" or "Somebody That I Used To Know" this year? Taken on their own, none of those songs really deserves another click. Mashed with the same-sounding hooks and Auto-Tuned vocals of Usher or Christina Aguilera or Jennifer Lopez or whomever, the new song/video becomes oddly entrancing. You might find this treatment helps make a lot of these songs fresh and enjoyable again.

If 8 minutes of dance pop was a walk in the park for your ears, maybe you're game for trying 11 hours worth of music on for size. BuzzFeed mines different genres for its Ultimate 2012 Playlist. "There's enough variety here that pretty much anyone is bound to run into a lot of stuff they either haven't heard, or perhaps had dismissed in some way," the site says. Start listening ...

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GQ

Rihanna.

Just when we thought Rihanna couldn't get any hotter, these photos popped up in GQ magazine. Clad in only a black, cropped, unzipped leather jacket, the sultry singer shows off her body, revealing her new goddess Isis tattoo under her breasts (and much more) on the cover of the mag's "Men of the Year" December issue. 

And that was just the beginning. 

Rihanna calls Chris Brown "dope," laughs off romance rumors

Inside of its pages, there are more scantily clad photos of the "Diamonds" crooner, with Rihanna wearing only black lace panties and shoes (black pumps in one, black tennis shoes in another) in several different shots.

But the six-page spread wasn't just about showing off Rihanna's toned assets.

Take a peek at Rihanna's hottest looks!

In an interview with the mag, the 24-year-old Bajan beauty also dished on her turn-ons, talked about love and quipped about the now infamous club brawl between her ex-boyfriend Chris Brown and rapper Drake.

"I like to feel like a woman," Rihanna said, when asked about what turns her on. "I have to be in control in every other aspect of my life, so I feel like in a relationship, like I wanted to be able to take a step back and have somebody else take the lead." 

Rihanna gets naked for "Unapologetic" album cover

And Rihanna, who appears to like to push the boundaries when it comes to her sexuality, said, even she has a stopping point. 

"Love makes you go places you probably wouldn't ever go, had it not been for love," she continued. "But I think everybody still has their limits." 

Speaking of love, while Rihanna didn't discuss her rekindled friendship with Brown, she did somewhat address the "Nobody's Perfect" singer's brawl with Drake back in June, which reportedly kicked off after Brown sent a bottle of champagne to Drake, and Drake sent it back with a note that said "I'm (vulgar) the love of your life," according to GQ. 

Justin Bieber and Rihanna help with Hurricane Sandy relief efforts

"There's no proof of that being for my love," Rihanna said. "That's my answer to that question."

Not surprisingly, this isn't the first time Rihanna has gotten nearly nude for a photo shoot.

Most recently, she took it all off for the cover of her upcoming album, "Unapologetic," which hits stores Nov. 19. 

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Another video full of complex imagery and storytelling--or in any case, Rihanna being all mysterious and sexy--has been released for your viewing pleasure.

The Barbadian beauty released her music video for the first single of her "Unapologetic" album, "Diamonds," which begins with a black-and-white visual of the singer rolling, um, something, with diamonds.

Not sure how that would work, but we'll go with it.

Rihanna and Chris Brown tease new song together

In between moments of exhaling a certain type of smoke (ahem), fans see Ri-Ri at various locations that highlight one of the elements: earth, wind, water and fire.

There's also a couple of scenes that show her hand slowly releasing the grasp of a male's tattooed arm, which may or may not be a surprise guest appearance by none other than Chris Brown. It's not a farfetched thought.

Watch the official video for "Diamonds" and let us know what you think in the comments below!

Fashion Spotlight: Rihanna

Slideshow: The rise of Rihanna

Evan Agostini / AP

Launch slideshow

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