Rihanna joined Kanye West to perform two songs during his set at the FYF festival in Los Angeles on Saturday night.

West had stepped in as a last minute replacement for Frank Ocean, who pulled out of his scheduled appearance on Thursday.

Rihanna joined the rapper for 'FourFiveSeconds' - their collaboration with Paul McCartney - singing the chorus from the gap between the stage and the audience, as well as joining West on stage 'All of the Lights'.

Watch a compilation of the fan-shot footage below: