Really, how does one tell Joel Madden and Pete Wentz apart. Besides their use of a flat iron, these dudes have so many things in common:

For now, though, our celebrity hair police are focusing on the man-bangs and general greasiness that definines the rockers' signature "look."

Posted in: Joel Madden

One of Lily Allen's best-known songs is called "Smile."

Well, the British pop wreck recently gave celebrity hairstyle watchers a lot to smile about when she upgraded her raggedy-ass pink 'do for the healthier and cleaner, chestnut-brown cut seen below (in London on Monday).

Posted in: Lily Allen

Brace yourself for a celebrity hairstyle shocker. A photo of Amy Winehouse with no beehive comes as a pretty big surprise to our celeb gossip writers, the hairstyle equivalent of Blake Fielder-Civil without heroin pumping through his veins.

But he's a whole 'nother story.

Posted in: Amy Winehouse

We've already learned that she can bust out a ridiculous o-face, but which hair color works better on Mandy Moore while doing so?

Recently, the pop singer and actress lightened up her traditional brunette locks to a warm strawberry blonde - and she looks great!

Posted in: Mandy Moore

Today's featured celebrity hairstyle is one of our Heroes. That's right, it's the petite, adorable, 18-year-old Hayden Panettiere!

Stylist Jen Atkin at the Chris McMillan Salon in L.A. gave the actress and girlfriend of Milo Ventimiglia a chin-length style June 6.

Posted in: Hayden Panettiere