1) Jennifer Aniston, 40Yes, she's 40. As hard as that is to believe, Aniston seems to be embracing this milestone and might be the best example of how 40 is the new 20. I think we're looking at the real-life Benjamin Button because she seems to be aging in reverse, looking much better than she did five years ago. The gossip mags have been buzzing about her lately and her cougar-ish, high-profile relationship with rock guitarist John Mayer. Some of the buzz is also thanks to her hit movie "Marley & Me," which sat atop the box office for weeks over the holiday season. She'll be pumping out more films this year, including "He's Just Not That Into You" and "Traveling."
2) Salma Hayek, 42Hayek just continues to get better, and dove into motherhood a year and a half ago. She is really the epitome of sexiness: with her sly smile, she's driven and tough, yet doesn't take herself too seriously. She's so irresistibly gorgeous that 22-year-old Megan Fox, the current flavor of the month and bombshell star of "Transformers," quipped recently on TV that she's so insecure that she would much rather have Hayek's body, especially the bust.
3) Carla Bruni, 42The stunning, Italian-born Bruni has been a high-paid runway model, singer, and songwriter, and is now the first lady of France. Before settling down with President Nicolas Sarkozy, Bruni had high-profile relationships in the past with rockers such as Mick Jagger and Eric Clapton. She's a lightning rod for the press, but has always carried herself with class, even when a nude picture of her taken in 1993 during her modeling days sold for $91,000 at auction.