Can you spot what's different about Beyonce's smile? The 31-year-old songstress recently posted a series of snapshots on her Tumblr account of herself wearing a grill. Find out the deets on her latest accessory! Plus, Kristen Stewart vamped it up at a screening of her latest flick, "On The Road," in NYC on Thursday, and we're taking a look at our favorite celeb TwitPics of the week. Let us know on Facebook or Twitter which you like best — and why!
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