Surf's up! Bikini-clad Rihanna roars around on the back of a jet-ski driven by pro surfer Makua Rothman as she continues to celebrate her 25th birthday. She has been spotted in the arms of her boyfriend Chris Brown for the last couple of days as she celebrates her 25th birthday. But Rihanna came up for air and spent part of her big day in the company of another man on Wednesday. The Diamonds In The Sky star showed off her bikini body as she indulged in her favourite pastime of jet-skiing with pro surfer Makua Rothman. However, riding no life jacket is very dangerous whether you are a star or no and those photos are not giving the best example to rest of the pwc riders or enthusiasts. Photo courtesy: dailymail.co.uk
