Kirstie Alley Weight Loss: I'm Down 100 Pounds Since 'Dancing With the Stars'

Kirstie Alley - Zang Toi - Backstage - Spring 2012 Mercedes-Benz Fashion Week - P - 2011
Mike Coppola/Getty Images

Debuting her slimmer body at New York's Fashion Week, she says, "I feel like I'm back in my element."

Kirstie Alley has seriously slimmed down since coming in second place on Dancing With the Stars last season.

"I've lost 100 pounds," she tells Entertainment Tonight.

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

Alley debuted her slimmer physique at by closing the Zang Toi show at New York City's Fashion Week on Tuesday.

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She tells ET, "Before Dancing with the Stars, I bought these dresses from size 14 to 4…all the same dress, and I said, 'You know what I really want? I really wanna be in this dress in a 4!'"

The 60-year-old actress reached her goal. She's currently a size 4, she says.

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She won't be undergoing plastic surgery to further change her looks, though.

"I haven't had plastic surgery but here's the reason: People do plastic surgery to make you look younger," she says. "I don't think it makes you look younger. I like it can make you look weirder."