Jennifer Aniston, Kim Kardashian, Rihanna, and more--click through to see A-listers show off their rockin' physiques
Pilates devotee Cyrus (seen in Miami in Dec. 2011) credits her gluten-free diet with her recent slimdown. "Everyone should try no gluten for a week," the LOL star tweeted last month. "The change in your skin, physical and mental health is amazing." (Health experts disagree with the actress' claims and generally agree only individuals with a gluten-related disorder should give up the ingredient).