Best & Worst Dressed 2007

UPDATED 09/24/2007 at 01:00 AM EDT • Originally published 09/24/2007 at 01:00 AM EDT

WHO'S GOT THE LOOK AND WHO'S GOT SOME EXPLAINING TO DO? TURN THE PAGE FOR OUR PICKS FOR THE 10 BEST-DRESSED STARS OF THE YEAR, PLUS A ROUNDUP OF THE BIGGEST FASHION DISASTERS, SHOCKING MOMENTS AND MORE

Jennifer Lopez

Avril Lavigne