What do all these celebrities have in common?

All these people have one thing in common:

Leonardo DiCaprio
Adam Levine
Jared Leto
David Spade
Colin Farrell
Shia LaBeouf
Jack Osbourne
Brett Ratner
Nick Cannon
Christian Slater
Vanessa Minnillo
Nick Lachey
Wilmer Valderrama
Jude Law
Joe Francis
Shaun White
Aaron Carter
Samantha Ronson
Gerard Butler

What is it? Give up?

Find out here