Katy Perry is dating Russell Brand and Robert Pattinson may or may not be in love with Kristen Stewart, but Wednesday night in Los Angeles, R-Pattz was seen hanging with Katy at a friend's karaoke party.
According to E! News, R-Pattz and K-Per were hanging at Dimples Karaoke Bar for mutual friend, actress Shannon Woodward's, birthday party, "Rob showed up at about 11:15 and Katy about an hour later," a source tells the website, adding that the "New Moon" star didn't sing, but Katy did.
Katy sang the Mariah Carey holiday classic, "All I Want for Christmas." She apparently was a little out of tune and joked, "I can't believe I get paid for this."
The pairing isn't as odd as it may seem. The two also hung out at Shannon's birthday last year when she had a dinner at Il Sole restaurant. Shannon has a "Twilight" connection to R-Pattz — she's starring in the flick, "Girlfriend," with Jackson Rathbone.
While out on the West Coast, Rob was seen with his "Remember Me" co-star Emilie de Ravin reportedly doing a photo shoot for an upcoming issue of Vogue magazine. When a rep for the magazine was contacted my MTV News, he would neither confirm now deny that a photo shoot took place.

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