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Pete Wentz and his much taller girlfriend Meagan Camper were spotted shopping at Opening Ceremony in Beverly Hills on Tuesday, and the rock star/model duo were all smiles as they left with their purchases.

Of course, she IS wearing heeled booties, so maybe she's the same height as him minus the shoes? Not only is Pete comfortable enough to let his lady love tower over him, but after meeting up in August, People reports that he introduced her to his son Bronx just one month later. Seems like they're taking things pretty fast ... wonder what ex-wife Ashlee Simpson thinks about her replacement?