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Stars' Workout Shout-Outs

Fergie, Kelly Osbourne and more are talking up their favorite fitness tricks and must-do routines

GWYNETH'S SCARED FIT

"Originally there was a scene [in Iron Man 2]...and I was in lingerie, and I was so panicked," says Paltrow of her workout regime kick-start. "And then it ended up getting cut out and I was already in such good shape that I had to keep going with it."