Harry Styles seems to have moved on from his "pain in the arse" split with Taylor Swift -- first with a girl in a hot tub, and now with Rod Stewart's daughter Kimberly.

But who is she?

NAME: Kimberly Stewart

AGE: 33 (making her 14 years Styles' senior -- and you thought Taylor Swift was a cougar)

OCCUPATION: Being Rod Stewart's daughter, which seems to entail posing nude for the British mag Tatler in 2008, modeling for brands like Tommy Hilfiger, and having her own reality show in 2007 entitled 'Living With Kimberly Stewart' -- wherein contestants competed to live with her. Okay then.

SEEN TOGETHER: The rumored couple were recently spotted together kissing and holding hands while out to dinner with Rod and the rest of his family. (Harry, don't you know you shouldn't do that stuff in front of a girl's father?)

FORMER FAMOUS FLAMES: Stewart has been linked to Jack Osbourne (to whom she bizarrely sent her signed breast implants after removing them in 2005), she was once engaged to 'Laguna Beach' star Talan Torriero, and she has a 2-year-old daughter with actor Benicio Del Toro.

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