Incredible celebrity slimdowns

Though Snooki and Christina Aguilera are gorgeous at any weight, they decided to make dramatic changes to their bodies this year.

After giving birth, Snooki dropped all of her baby weight (45 lbs.) and then some. Now, she's a whopping 50 lbs. lighter. The former 'Jersey' star and 'Dancing' alum explains that she forces herself to go to the gym, even when she doesn't want to.

While she's incredibly confident, she does have detractors. She told InTouch magazine that she takes it all in stride, reminding critics that she's ' I'm 4-foot-9, which is the size of a third-grader, so weighing 96 pounds is normal for me.'

Christina Aguilera also showed off her unbelievable weight loss this year, stunning everyone with her noticeably slimmer figure at November's American Music Awards. Sources say the talented singer lost upwards of 20 lbs.

The secret to her success? A portioned meal plan, weight training and yoga.
How do you think they look? Talk to us in the comments below.