Check out these celebrity weight loss pics! They are impressive!
Jersey Shore's Snooki ate right and exercised and lost weight after giving birth to her son, Lorenzo.
Jessica Simpson Weight Loss Pic
Jessica Simpson showed off her post-baby bod in Redbook.
Mariah Carey showed off her post-baby abs.
Kelly Clarkson dropped 30 pounds by working with a trainer and using portion control.
Carrie Fisher showed off a slimmer frame.
Matthew McConaughey dropped weight for his acclaimed role in Dallas Buyers Club.
Chris Pratt took a selfie of his super-ripped bod after getting in shape for Guardians of the Galaxy.
Christina peeled off the pounds in 2013.
Jennifer Hudson Weight Loss
Jennifer Hudson became a Weight Watchers spokesperson and lost 80 pounds.
Ricki Lake lost 25 pounds while on Dancing With the Stars.
Kelly Osbourne worked on keeping herself fit after a stint on Dancing With the Stars.
Perez Hilton Weight Loss Pic
Perez Hilton started eating better and working out and lost 60 pounds!
Seth Rogen Weight Loss
Seth Rogen slimmed down for his role in The Green Hornet.
Jordin Sparks showed off her bikini bod in Shape. The singer lost 30 pounds after working with her trainer.
Kendra Wilkson shed in 2011 and talked tips with OK! Magazine.
Kevin Smith Weight Loss Photo
Filmmaker Kevin Smith recently lost 85 pounds. He showed off the transformation in a stunning before-and-after pic tweeted earlier today.