Celebrities who go by one name

POSTED: 2:32 PM PDT May 31, 2011    UPDATED: 11:00 PM PDT June 11, 2014 
singer Robyn, 2012 Grammys

Swedish dance-pop singer Robyn, who celebrates her 35th birthday on Thursday, is just one of several celebrities who go by one name. In honor of the singer's birthday, take a look at other stars who are too big for a last name.