Rihanna is reportedly helping her brother launch a career as a rapper.

The Umbrella hitmaker is keen to help her sibling Rorrey Fenty, who uses the stage name Gallest, with a planned assault on the charts and has reportedly recorded a number of tracks with him.

A source tells Britain's Daily Mirror newspaper, "(Rihanna) knows he has talent, but he loves to party and she wants him to achieve something musically first. She knows anything she guests on will help with his commercial success."