Vote on this week's styles, including Rihanna, Anne Hathaway and more stars! You decide – are they fashionistas or flops?
Published: Saturday Aug 20, 2011 | 06:00 PM EDT
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After rapping on Conan, the One Day star makes a more formal turn in a black-and-white, tuxedo-inspired ensemble with a Dolce & Gabbana tee for an appearance on the Late Show in N.Y.C.
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