Kirstie Alley

Kirstie Alley has lost 100 pounds, she tells Entertainment Tonight

"I feel like I'm back in my element," she said. "I honestly didn't even realize what I looked like." 

The Dancing with the Stars runner-up has long talked about her body struggles. In 2004, she became the spokeswoman for Jenny Craig and in 2006, she showed off her slimmed down figure in a bikini on Oprah. She regained weight before mambo-ing off the pounds last spring.

Check out more dramatic celebrity weight loss

"Before Dancing with the Stars, I bought these dresses from size 14 to 4," she explained. "[They were] all the same dress, and I said, 'You know what I really want? I really wanna be in this dress in a 4!'" 

What do you think of her weight loss?