Wow! Anne Hathaway Wears Sexy Backless, Beaded Dress at Les Miserables London Premiere

Anne Hathaway attends the World Premiere of 'Les Miserables' at Odeon Leicester Square on December 5, 2012 in London, England. Credit: Ferdaus Shamim/WireImage.com

Anne Hathaway's back was front and center in London at the Wednesday Nov. 5 premiere of Les Miserables.

Hitting the red carpet for the epic film musical based on the classic Broadway show, the newlywed star, 30, made a dramatic appearance in a white Givenchy gown featuring pearl details, draped, off-the-shoulder sleeves -- and a rear hemline that completely exposed the actress' back, famously slimmed down from rigorous dieting for the intense role.

"I still feel the stress over 'Am I thin enough? Am I too thin? Is my body the right shape?'" Hathaway admits in the January issue of Glamour. "There's an obsessive quality to it that I thought I would've grown out of by now. It's an ongoing source of shame for me."

To faithfully portray Fantine in Les Miserables -- a prostitute dying of tuberculosis -- Hathaway cut off her famoly long locks and lost a total of 25 pounds via extreme measures.

"I had to be obsessive about it--the idea was to look near death," Hathaway told Vogue. "Looking back on the whole experience--and I don't judge it in any way---it was definitely a little nuts. It was definitely a break with reality, but I think that’s who Fantine is anyway."

Tell Us: What do you think of her red carpet look?