Of course, it isn't only the Fashion Police star's appearance that has changed. In just a few short years, she's managed to totally turn her life around. In an interview with Cosmopolitan UK last year, Kelly said she'd been to rehab seven times and was also in two mental institutions, although she admits that's not what helped her turn her life around.
"What changed for me was looking around and seeing that nobody liked me or wanted to work with me," she told them.
As part of her transformation, Kelly started working out and changed her diet and now, 70 pounds slimmer, she has a healthy body AND a healthy attitude.
"I don't compare myself to anybody else. It's OK to have a healthy envy and look up to somebody and set goals, but you have to realize that you're never going to be exactly that person," she told Self magazine in April. "Wishing you were Angelina Jolie or J.Lo isn't going to change the fact that you're not. Why not start working with what you do have instead of what you don't?"
Kelly is still hitting the gym hard and after this latest gym pic she posted, we're looking up to her! Kelly is definitely our gym-spiration for the day - cute, coordinating outfit and all!
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Gallery | Celeb Slimdowns