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We were wondering who this was!

Robert Pattinson stepped out with a grungy blonde gal last weekend at Little Door, and she's been identified as Los Angeles-based model Imogen Kerr. According to Us Weekly, mutual pal Dakota Fanning reportedly introduced Kerr and Pattinson, and get this -- the 22-year-old model is friends with Kristen Stewart!

And this isn't the firs time they've hung out! Last month the Twilight star and his lady friend hung out at Good Times at Davey Wayne's, and a source tells the mag, "He was leading her out ... it was romantic."

Hmm, any chance this is just a friendly hang out? She doesn't really seem like his type...