Frank Micelotta/Getty; iStock
12/22/2009 AT 02:00 PM EST
Everyone struggles with weight loss – and the stars are no exception! Beyoncé Knowles went on the Master Cleanse diet (cheyenne pepper, maple syrup and lemon juice) to lose 20 lbs. for her role in Dreamgirls
. To motivate herself, Kourtney Kardasian works out naked! We've heard of cookie diets, soup diets and more – so tell us, what the craziest thing you've done to lose weight?