The man or woman who has been styling Rihanna for the past couple of years since of old stylist, Mariel Haenn has been a mystery since not much information has been shared.
Now information is known that her current stylist [at the moment] has been stated to be renowned Mel Ottenberg. It has been said that he styled her on the LOUD tour and the new single "We Found Love." You can see him in the behind the scenes footage of new music video, "We Found Love."
Note: In the video he is the one laughing at Rihanna's muddy Doc Martens.