It's been three years since Kirstie Alley signed on as a spokesmodel for the Jenny Craig weight-loss program, which helped her shed 75 pounds and gave her the courage to strut her bikini stuff in front of a live Oprah audience. Now, it's time for the actress to step aside.

Alley, who has maintained her weight loss for more than one year and remains on Jenny Craig's maintenance program, passes her torch to former One Day at a Time star Valerie Bertinelli who has successfully lost more than 30 pounds. Queen Latifah also joins the Jenny Craig cast as the new face of 2008.

Alley says she's thankful for the opportunity to help so many other people lose weight and keep it off.