Spears gives Jonas a performance to remember at London's Wembley Arena. Plus: Kim Kardashian, Beyoncé, R-Pattz and more
Credit: Jon Furniss/WireImage
Updated: Tuesday Nov 01, 2011 | 05:00 PM EDT
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What's so funny? Justin Timberlake keeps costar Amanda Seyfried in stitches at the London premiere of their sci-fi flick, In Time, on Monday.
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