Rihanna: Mawazine Music Festival Performer!

Rihanna shows off her flat tummy while performing at the 2013 Mawazine World Rhythms International Music Festival on Friday (May 24) in Rabat, Morocco.

The 25-year-old entertainer was the first artist to kick off the festival, which will also include performances by Jessie J, David Guetta, and Enrique Iglesias.

PHOTOS: Check out the latest pics of Rihanna

Earlier in the week, Ri was spotted heading to a recording studio in Long Beach, Calif. Hopefully we get some new exciting music soon!

20+ pictures inside of Rihanna performing at the Mawazine World Rhythms International Music Festival…