Kirstie Alley has lost 100lbs

Kirstie Alley had dropped a massive amount of weight (again).

The 60-year-old told Entertainment Tonight that she's lost 100lbs – or 45 kilos, and it's all thanks to Dancing With The Stars.

The 60-year-old actress started her slim-down regime before appearing on the US reality show, but the demanding nature of dance training accelerated her weight loss.

"I've lots 100lbs," she told ET.

"I feel like I'm back in my element. I honestly didn't even realise what I looked like."

Kirstie is an infamous yo-yo dieter and has battled with her weight for years.

And while she's proud of her latest loss, the actress seems to know when enough is enough- a rare thing in Hollywood.

Kirstie told ET she's not a fan of surgery –because it makes people look weird.

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

The actress also said she's keen to spend more time with men, but it doesn't sound like she's into long-term relationships.

"This is what I think about sex. I think it's fun to hook up every night for six months. Then it's time to move on!"

Watch out for the man-eater!