Pretty Woman

On the verge: Hard to believe, but America's Sweetheart, Julia Roberts, will turn 40 in October. Roberts, who just gave birth to her third child with Danny Moder, seems plenty happy to be out of the spotlight, but she'll always be that Pretty Woman. Pamela Anderson turns 40 in July,... more and last time we and Borat looked, she was both adorable and hot. And kick-ass action star Vin Diesel also turns 40 in July, staying both fast and, we presume, furious. (Sara De Boer, Chris Ashford, Sam/Starface/Retna Ltd.)

Kati Johnston is a freelance writer specializing in entertainment, and is a frequent contributor to MSN.com: kati.johnston@comcast.net