Christina Ricci stunned fellow beachgoers in Miami last week with an enviably slim bikini body.The 29-year-old, who was joined by new photographer boyfriend Curtis Buchanan, wore a chic purple bandeau-style two-piece for her trip to the beach, displaying tattoos on her left hip bone and right upper thigh.The couple, who have been dating for nearly three months held hands as they splashed and kissed in the waves, looking blissfully happy together.The surf was probably a little stronger than the actress anticipated though, as she was forced to readjust her bikini top as she stepped out of the surf.Earlier the couple had been seen spending time in the calmer waters of their hotel pool, and later strolling along the boardwalk to the beach.