Divas Who Dine! Christina Aguilera & Rihanna Look Unusually Demure

They are known both for their distinctive singing voices as well as their onstage racy ensembles. But Rihanna and Christina Aguilera looked a little more demure as they dined together at upmarket restaurant Giorgio Baldi on Sunday night. The Diamonds singer joined Christina and her fiancÚ Matthew Rutler at the eatery, in Malibu, California with Christina sporting a distinctive cream hat with black ribbon.