The singer-actress and husband Marc Anthony show their allegiance to the Dolphins. Plus: The Jonas Brothers, Christina Milian, Ashlee Simpson-Wentz and more

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MODEL BEHAVIOR

No, she's not walking in the runway – but an ever-fashionable Rihanna may as well be as she turns heads at the Dior Spring/Summer 2010 show during Paris Fashion Week on Friday. The R&B singer has been spending time in Europe where she recently attended a friend's wedding.