Shocking, indeed! Some celebs seek out extreme methods to shed pounds, while others transform with the aid of healthier methods. From Rosie O'Donnell's and Jordin Sparks' respective 50 pound weight losses to Biggest Loser winner Rachel Frederickson's whopping 155 lighter frame, see before and after pictures of celebrities' weight loss transformations.
Jason Sudeikis 20 pounds
TMI over his BMI! The comedian credited his weight loss to wild bedroom romps with his gorgeous baby mama Olivia Wilde in an August 2013 interview with Elle magazine. "I have the greatest workout partner in the world," the SNL alum said of Wilde, who once said that she and Sudeikis "have sex like Kenyan marathon runners."