Jennifer Aniston, Kim Kardashian, Rihanna, and more--click through to see A-listers show off their rockin' physiques
The GOOP founder (seen here in Sardinia in July 2011) says celebrity trainer Tracy Anderson is responsible for her total transformation. "[She] completely changed my legs, butt, arms and stomach," the actress told Self last spring. "I feel better than ever too!"
Credit: CPE/MB/RAMEY PHOTO