Hollywood's Top 18 Most Drastic Celebrity Haircuts (PHOTOS)

When Taylor Momsen (before, May 2007 at left) debuted her Joan Jett-inspired shag in Season 3 ofGossip Girl (after, February 2009 at right), we knew something was wrong. And we were right: It was just the beginning of a nicotine-fueled downward spiral into madness. RIP, Little J.