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Christina Aguilera and Britney Spears

Christina Aguilera is “up in arms” over Britney Spears joining “The X Factor,” reveals Star. The mag says “The Voice” judge is going around bashing her rival, telling people that Spears acts “like a zombie” and is “going to be a disaster” on the singing competition. For how Spears is striking back at Aguilera’s insults, click over to Gossip Cop.

Celebrity Rumor Mill

Gossip Cop debunks the most ridiculous rumors of the week, from Tom Cruise's nude photos to Lindsay Lohan's new boyfriend.