Rihanna was a show stopper in a glittering Givenchy gown while walking the red carpet at the BRIT Awards 2012 in London on Tuesday. VIEW PICS HERE

Rihanna celebrated her 24th birthday with her British fans. One of the world’s biggest pop stars rode the Tube (better known as the subway to U.S. folks) to rehearsals for Tuesday’s BRIT Awards in London, where she is set to perform with Coldplay. READ MORE VIEW PICS