15. Avril Lavigne
Since blasting onto the scene as a necktie-and-wifebeater-clad mall-punk princess, this 22-year-old has gotten hitched and received eight Grammy nods. Her new CD, The Best Damn Thing, says it all.
14. Katherine Heigl
All praise The 40-Year-Old Virgin director Judd Apatow, who took this Grey’s Anatomy star out of her shapeless scrubs and gave her a starring role (opposite Seth Rogen) in the insta-classic Knocked Up. Now if Apatow could only make Sandra Oh disappear… 
13. Beyoncé
She may have been snubbed by the Oscars, but Jay-Z’s young B doesn’t need a naked gold dude to prove she’s got talent. Just check out her gorgeous body, her pile of Grammys, her tens of millions of albums sold… And to think, it all started with a losing performance (by her group Girls Tyme) on Star Search!
12. Angelina Jolie
First she became a goodwill ambassador for the U.N., then she began adopting a rainbow coalition of children, and last December she appeared on the cover of Maxim. Is there anything this once-every-hundred-years stunner won’t do for humanity?
11. Sienna Miller
Anyone who’s watched this 25-year-old knockout flirt with Daniel Craig in Layer Cake and channel Edie Sedgwick in Factory Girl, knows she’s poised for megastardom. And with rumors of her being the next Bond Girl, we’re already shaken and stirred.
