Rihanna Sexy Black Plunging Slit Celebrity Prom Gown VQ Speaking of Rihanna's second look, she wore a black dress for the event, in which she looked absolutely stunning. During the event, she posed for the paps in stunning poses., To complete her look, Speaking of Rihanna's second look, she wore a black dress for the event, in which she looked absolutely stunning. During the event, she posed for the paps in stunning poses. To complete Remembering: Rihanna with satin dresses on the streets of the United States. She's perfect in every way Rihanna Navy, but I feel her with dresses like that. #rihanna #badgalriri Rihanna keeps it flawless in a gorgeous YSL slip dress, showing exactly how street style should be done.