Rihanna is one of fashion's most iconic figures. From her amazing every day street style, to her incredible gowns, she never fails to impress. However, Rihanna's best looks always come about for the Met Gala. The prestigious event happens once a year, and Rihanna's themed outfits always outshine the rest. From the iconic yellow dress to the chic pope-inspired ensemble, she never fails. With the new Met Gala theme just having been announced, L'OFFICIEL takes a look back at some of Rihanna's best Met Gala looks.