Heads up Russell Brand your ex-wife is hanging out at the Chateau Marmont with no other than the serial celebrity dater John Mayer. Uh-oh!

The two pop icons were spotted enjoying a dinner date at Pace restaurant in LA before moving on to the Chateau Marmont Hotel. The car photos of John and Katy confirms previous reports about their rumored romance. They were first seen together grabbing a bite of pizza last June.

As much as John Mayer is known for his music, he is also known for his very public hookups often targeting the latest Hollywood ‘It’-girl.

He has been linked to a string of hot

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