Knowles cheers on hubby Jay-Z at his London concert. Plus: Zac Efron, Heidi Klum, Gwen Stefani and more
Credit: Belle Pictures/Ramey
Published: Tuesday Jul 06, 2010 | 05:00 PM EDT
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Zac Efron brings the heat while celebrating the Fourth of July with girlfriend Vanessa Hudgens and their friends in Malibu, Calif.
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