Wilde promotes a pal's book in N.Y.C. Plus: David Beckham, Khloé Kardashian-Odom, Heidi Klum and more
Published: Tuesday Apr 02, 2013 | 05:00 PM EDT
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Demi Lovato, who will return for the third season of The X Factor, takes the stage to perform her latest single, "Heart Attack," during a Monday visit to Jimmy Kimmel Live in L.A.
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