By InStyle Staff
Jun 15, 2012 @ 4:00 pm
Retna Ltd.; Kevin Mazur

Grab a slice of cake—it's Courteney Cox's 48th birthday! Help the former Friend celebrate by taking a look back at her Hollywood transformation, from Bruce Springsteen video girl to style star. Click through the gallery to see all of Courteney's best beauty looks through the years.

MORE:Courtney Designed These Flip Flops for CharityMom and Tot Style: Courtney and CocoCeleb BFFs: Courtney Cox and Jennifer Aniston