Rihanna Makes Surprise Performance at Desert Trip Festival with Paul McCartney!

Rihanna joins Paul McCartney on stage during the Desert Trip Festival on Saturday night (October 15) in Indio, Calif.

The 28-year-old “Work” singer surprised fans as she made her way to the stage during the middle of Paul‘s set.

PHOTOS: Check out the latest pics of Rihanna

Rihanna and Paul performed their 2015 hit song “FourFiveSeconds” for fans, as seen in the video posted by Rolling Stone.

“We finally found someone under the age of 50,” Paul joked as Rihanna left the stage at Desert Trip, which is also known as “Oldchella” because of it’s older demographic.

Also pictured inside, Rihanna leaving dinner on Thursday night (October 13) in Santa Monica, Calif.