Beyonce shows off her rocks in Cannes at the premiere screening of selected scenes of Dreamgirls. While in town to promote the movie, she spoke about losing over 20 lbs while filming. Turns out Tom Hanks was her inspiration. Who knew? People reports:

"At the beginning (of filming), I was my normal weight," she said. "I actually gained a little bit, but then I lost 20 lbs. when I went from young Deena to old Deena. I wanted it to be something more than just make-up and hair. I wanted to see the change."

"The director (Bill Condon) actually kept telling me to 'eat, eat, eat' for continuity, but I really wanted to go all the way. I was inspired by Tom Hanks. He did it all the way (in Castaway), so I said, I can do it all the way!"

Word is that the folks a Cannes were very impressed by the selected scenes they saw of the movie. They are already talking Oscar. Too bad we have to wait until December to see it.

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