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Malin Akerman and Roberto Zincone are the proud parents of a baby boy.

Malin Akerman is a mom! "The Rock of Ages" actress welcomed a baby boy Tuesday, her first child with musician husband Roberto Zincone. 

"My husband and I welcomed our beautiful, healthy baby boy to this world this morning! Biggest joy of my life!!! #lovemykid," she tweeted.

A few minutes later, she added, "PS and his name is...Sebastian Zincone :))) Love him more than life itself!! #whatafeeling !!!" 

NEWS: Malin is only 34, but check out all these celebs having babies after 40 

Akerman revealed in September that she and Zincone were expecting. 

"I'm showing off the bump that's coming," the striking blonde told E! News in October. "I'm just so excited that I can actually talk about it. It was tough to keep a secret." 

Akerman said that, while they didn't know yet whether they would want to know the baby's gender in advance, she and her hubby of nearly six years had already picked out names for a boy and a girl, come what may. 

PHOTOS: Malin joins the ranks of Hollywood's hottest moms 

"That's done," she laughed. "We started that years ago and we finally came to an agreement for both sexes." 

Congratulations to the proud parents! 

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Danny Moloshok / Reuters file

Malin Akerman.

"Rock of Ages" actress Malin Akerman better brush up on her lullabies! The Swedish-Canadian beauty, 34, is pregnant, her rep confirms to Us Weekly exclusively. It's the first child for Akerman and her husband of five years, Roberto Zincone -- the drummer in her former alternative rock band The Petalstones.

PHOTOS: Adorable tots and their A-list mamas

Her pregnancy is sure to be a dream for the actress, who told Us in June 2011 that she and Zincone "absolutely" wanted children sooner rather than later. Akerman -- who also appeared in "Wanderlust" and "Watchmen" plus the TV show "Children's Hospital," among many other credits -- is confident her husband will make a great dad because of his easygoing demeanor.

PHOTOS: Star moms' best parenting advice

"We rarely bicker," the actress tells Us of her husband, with whom she recently renovated a home. "We'll sort of fume at each other and then we'll figure it out."

VIDEO: Peek inside an A-list nursery

The couple is also good at keeping the romance alive -- no matter where they are. "We've had some really great experiences. When I was shooting [2009's 'Couples Retreat'] in Bora Bora, he came out there and it was like a honeymoon that we never had," gushed the mom-to-be, who vows to never spend more than 2-3 weeks away from her man. "We get really lucky and we make it work."

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