Most shocking celebrity body transformations 2011

Christina Aguilera's body has gone through several transformations throughout her career - from rail thin to curvy to a little more plump. The Latina reportedly loves her figure now, setting an example for young girls to appreciate themselves. Way to go christina!

Kirstie Alley says she has lost 100 lbs. since last year, Her "Dancing With The Stars" in the Spring and a specialized diet seems to have helped her achieve the desirable weight.Work It!

 Demi Moore has always been thin, but this year she dropped to scary skinny levels, The 49 year old actress split with husband Ashton kutcher late this year seems to be taking the separation pretty badly, as she has gone extra extra skinny. Eat something Demi!

Mariah Carey says she lost 70 lbs. following the birth of her twins in April 40 pounds of which was water weight from her difficult pregnancy. Good work Mariah!

Nicole Polizzi "Snooki"
She has always been open with her weight struggles in high school, the "jersey shore star" recently revealed that she's thrilled to have reached her goal weight. We are happy for you if you are not starving yourself. Stay healthy!