Which middle-aged Hollywood stars are breaking the style rules?

We've heard that 40 is the new 30, but in Hollywood it feels like 50 -- even 60 -- is the new 20! Women who would technically fall into the "middle aged" category (Halle Berry, Courteney Cox) look nothing like they did a generation ago, and they probably feel a little different as well. They're taking better care of their skin and their bodies, and there's no doubt that their fashion contributes to a youthful attitude. Have a look at the following stars, who all happen to be 40-plus, and tell me why there should be an age cutoff for showing off fabulous legs, having long, wavy tousles, or embracing a thigh-high pair of fall boots. 

Leather mini dress

The yoga-loving, 42-year-old is famous for her long lean legs and they certainly look stunning in this sexy Celine LBD. (Dave M. Benett/Getty)
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Thu, Oct 13, 2011 3:09 PM EDT

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