Rihanna supports rapper brother at London debut

Rihanna hit London with her model pal Cara Delevingne on Sunday (16Jun13) to watch her aspiring rapper brother's debut U.K. performance.

The Umbrella singer performed for thousands of fans at Twickenham stadium in the U.K. as part of her Diamonds World Tour, while another member of the Fenty family was gearing up to take to the stage on the other side of town.

Rihanna rushed to the Boujis club in central London to catch her younger sibling Rorrey, who goes under his hip-hop name GQ, perform material from his mixtape In My Mind.

Rorrey's superstar big sister was spotted dancing at the side of the stage with catwalk star Delevingne.