Katy Perry Hangs Out With Mark Zuckerberg & More! [Celebrity Twitterverse]

January 22nd, 2011 // Leave a Comment

Usher shows off his purple shades in support of Justin Bieber, Katy Perry hangs with Mark Zuckerberg, the Hellcats are ready to compete, and the new American Idol family celebrates the premiere of season 10.

Check out all the Twitter pics in the gallery!

By Miu von Furstenberg
asl

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