Aguilera and her beau catch the Rihanna concert in L.A. Plus: Holly Madison & Rainbow, Chris Hemsworth, Charlize Theron and more
Credit: Bobby Bank/WireImage
Published: Tuesday Apr 09, 2013 | 05:00 PM EDT
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Heidi Klum's dress manages to steal the spotlight from Howie Mandel as the two arrive at America's Got Talent auditions in New York City on Monday.
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