Bey's body is widely regarded as the picture of perfection, but the pop superstar had to get her bootylicious curves under control for her role as Deena Jones in Dreamgirls. Blue Ivy's momma reportedly dropped 20 lbs. using the Master Cleanse, aka the Lemonade Diet, before filming. Thankfully, she was able to put the body we all envy back together (with the help of a few extra desserts) after production wrapped.
(Photos from left: Jason Merritt/Getty Images For BET, Paramount Pictures)