Rihanna recently took to Instagram to post topless pictures of herself aboard a luxury yacht.
According to Gossipcenter.com, the 'Diamonds' hit maker, who is on a vacation in Brazil, also showed off her ample curves in a sexy gold bikini while posing on a surfboard.
Rihanna is currently busy shooting for Vogue Brazil's spread around the Copacabana Beach area near Rio de Janiero.
