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Harry Styles

Harry Styles
It's tough to complain about this one, since the One Direction star is obviously just having some fun with the gangsta rapper look while the boys are touring in the U.S. this summer. Just don't make it permanent, Hazza!

Worst Celebrity Grills

Rihanna, Justin Bieber, and Miley Cyrus are just a few of the stars who've filled their mouths with bling. Check out our countdown of the worst celeb grills.

Visit Yahoo! Movies to check out all the red carpet action from the "One Direction: This Is Us" premieres in London and New York.