OFFICIAL: JATY IS BACK

After ending their romance last February, Perry and Mayer were seen together in Beverly Hills in early January, sparking suspicion that the artists had reunited. It was first time they had been seen together publicly since breaking up.

"Katy Perry and John Mayer walked in together, arm in arm, and the whole room literally fell silent," a source told Page Six. "Even Dimitri Dimitrov -- Hollywood's most famous maitre d', who has seen everything -- and Sunset Tower owner Jeff Klein both stopped mid-sentence when John and Katy arrived, as if they wanted to announce to everyone in Hollywood they are back together."

After Perry's marriage with Russell Brand effectively ended in December 2011, the pop superstar began dating Mayer around August of 2012. The couple experienced an on-off relationship, with engagement rumors swirling during the months preceding their split.

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