Celebrity Knees

Virtually all celebrities ended up under the doctor's knife in order to look younger. And, yet there exists one particular spot that reveals their true age - their knees.

Catherine Zeta-Jones

Angelina Jolie

Eva Longoria

Sharon Stone

Katie Holmes

Elle Macpherson

Courtney Cox

Nicole Kidman

Jennifer Aniston

Melanie Griffith

Demi Moore

Kate Moss