Lunchtime Lowdown: Tom Cruise Officially Signs On for New Sci-Fi Flick 'Oblivion'; Oprah Hosts a Star-Studded Wrap Party in Chicago

• Tom Cruise officially signs on for the new $100 million sci-fi flick Oblivion. (Huffington Post)
• Celebrity guests attended Oprah's lavish wrap party this week in Chicago. (TMZ)
• Cee Lo Green and Christina Aguilera's collaboration "Nasty" to debut on the Voice. (Pop Eater)
• Janet Jackson dines out at the Cannes Film Festival with Wissam Al Mana. (Just Jared)
• Check out stars who put on their bikinis while on the beach in Cannes.  (Celeb Buzz)

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