Kevork Djansezian/ama2012 / Getty Images Contributor

A.J. McLean, Howie Dorough, Brian Littrell, Nick Carter, and Kevin Richardson of Backstreet Boys.

Director Stephen Kijak is prepping a movie-length documentary for theatrical release on arguably one of the biggest boy bands of all time, the Backstreet Boys, for U.K. and US production banner Pulse Films.

Kijak, whose resume boasts the docs "Stones In Exile" and "Scott Walker -- 30th Century Man," is to detail the tumultuous journey from child stars to fully-grown boy band.

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Produced by Mia Bays and Thomas Benski and exec produced by Lucas Ochoa, the music documentary is billed as a tell-all project about all five original members of the band and aims to be finished by the fall of 2013.

Backstreet Boys sold in excess of 130 million albums, making them one of the top 30 best-selling global artists of all time.

Kijak said: "What drew me to this project is their (Backstreet Boys) openness and willingness to push themselves into uncomfortable places, to be vulnerable and honest and to be really trusting of the filmmaking team to steer them in the right direction."

He promised the film wouldn't just be some "3-D Boy Band puff piece," adding that "BSB is getting real and it has been exciting to work with them as they explore their past and start to look towards their futures."

VIDEO: Reunited Backstreet Boys announce show in NYC, new album

Kijak described himself as a fan of them "as people first and foremost" noting that his way into the subject matter was the human story behind the music and success.

"We always wanted to make a film and now is the ideal time. With Kevin back, the fact that we are masters of our own destiny, a new album in the works and our 20th anniversary -- it all adds up to being the right time to share our story," a statement from the Backstreet Boys said.

The band continue to have a huge following in territories worldwide including Japan, Latin America, Germany, U.K., the U.S, Canada, China, India, Spain and Mexico. The group's recent concert shows still deliver big audience numbers all over the world. An album and world tour are also in the works.

Director Kijak brought his Scott Walker picture to Berlin in 2007 and his Stones documentary unspooled at Cannes in 2010.

In 2012, Pulse produced and released Sundance hit "Shut Up And Play The Hits" charting the final days of cult US band LCD Soundsystem.

The banner also co-produced the Katy Perry/Paramount film "Part Of Me 3D" and previous credits include "No Distance Left To Run," the Grammy nominated film about seminal U.K. band Blur by director duo thirtytwo.

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Danny Moloshok / Reuters

South Korean rapper Psy performs "Gangnam Style" with MC Hammer at the AMAs.

Dressed all in black, PSY took the stage first, sporting a version of the baggy "Hammer pants" MC Hammer made famous decades ago. Then MC Hammer himself joined in, though his outfit was all in white.

The billowy trousers didn't stop either musician from dancing up a storm, even trotting through the famed horse-riding style dance PSY tackles in the "Gangnam" video.

Christopher Polk / Getty Images

Singer Justin Bieber wore MC Hammer-style pants to the AMAs.

Hammer wasn't the only nostalgic act to take the AMA stage. Boy banders The Backstreet Boys, who celebrate their 20th anniversary next year, also made an appearance.

Jason Merritt / Getty Images

Singer Justin Bieber's striking shoes.

In contrast, the night's big winner, Canadian teen singer Justin Bieber, wasn't born until 1994, at which point the Backstreet Boys and MC Hammer were already well into their fame. Yet even Bieber himself sported a version of Hammer's baggy pants, along with a fashion twist of his own -- what appeared to be red slip-on shoes dotted with tiny black spikes. No one step on his foot!