Before hitting the red carpet to promote her new movie “Battleship” in London today, Rihanna took the tube to watch Drake in concert at the O2 lastnight March 27.

Wearing sunglasses, denim hot pants, Christian Louboutin Sea.nn Girl Thigh High Boots and Maison Martin Margiela Flame Print Cotton Jersey Tee, the 24-yr-old popstar boarded a Jubilee line train from Waterloo to North Greenwhich – surprising many passengers.

Today March 28, Rih was spotted at The Corinthia Hotel in London,  to promote her new film “Battleship.”

Joining the bajan beauty were co-stars Taylor Kitsch and Brooklyn Decker, along with director Peter Berg.