Pink Hair Photo Finish: T.R. Knight vs. Rachel McAdams vs. Joss Stone vs... Pink!

All four of the stars below have something in common: they're attracted to men. Which is all good by us. They also have the pink hair thing goin' on!

We're not sure why, but some do it better than others. Who, in your opinion can pull off the pink 'do and whose locks are more like pink don'ts?

First, we have the newly-transformed T.R. Knight, star of the hit medical drama-comedy Greys Anatomy. He said he was looking forward to time away from the show this summer, and made good on that promise with dyed pink locks.

To his right, we have the lovely Rachel McAdams. She's been rocking the pinkness for some time now. The Notebook and Wedding Crashers star sure is hot, and her fiance, Ryan Gosling, seems to dig it, so we'll give her two thumbs up.

Now it's time for a couple of singers. At left, British cutie Joss Stone, who is in the process of introducing herself on her newest album with great vocal skillz and a radical new look. Somehow she pulls it off. As does a crazy chick who needs no introduction: Pink.

Who's your favorite pink-haired hottie? Let us know.