Rihanna crashing your birthday dinner would be the best thing ever right?! Well, one lucky fan got the surprise of a lifetime after Rihanna crashed her birthday dinner. Samirah Abdullah celebrated her birthday at Nobu in New York and her friend, Nini spotted Rihanna dining across the room. She went up to the singer/fashion mogul to ask for a picture for the birthday girl but Rihanna had a better idea. Riri told Nini to tell the birthday girl that her request for a picture was denied, however, when the cake made it to the table, so did Rihanna, who sang and took pictures with the birthday girl.