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Avril Lavigne and Brody Jenner have been dating since last February, and they're still going strong -- could this be the real deal?

Jenner and his punk rock princess hit up Kitson on Robertson Blvd., and it looks like these high rollers practically bought out the store!

Lavigne recently put the Bel Air home she shared with ex-hubby Deryck Whibley on the market. The ex-pair bought the eight-bedroom, 10-bathroom mansion back in 2006, and the singer is now offering it up for a cool $9.5 million.

Does this mean Avril and Brody will be moving in together soon?

Find out where the sexy pair got matching ink, after the jump ...