3. Kelly Osbourne

3. Kelly Osbourne

After enduring years of taunting from the press, Kelly Osbourne shocked the world in 2009 when she lost almost 25kg by cutting junk food out of her diet. In an interview with Shape, Kelly said that being able to model a bikini for the cover of the magazine was the “biggest victory” of her life, and that it made her want to cry. Since then, Kelly’s weight has had little fluctuations, but she certainly made waves at the Emmys in 2012 when she showed off her teensy waist in a figure-hugging Zac Posen gown.