Rihanna & Rob Kardashian: Go-Karting!

Rihanna joins pal Rob Kardashian for a race around the tracks at Racer’s Edge Indoor Karting on Saturday (August 25) in Burbank, Calif.

The 24-year-old Barbadian beauty also went go-kart racing with stylist pal Mariel Haenn, who tweeted, “2nd place on the left. 1st place on the right. She cheated.” See the picture that was tweeted below!

PHOTOS: Check out the latest pics of Rihanna

Next, Rihanna and the crew did a bit of post-race partying at the club Playhouse in Hollywood.

FYI: Rihanna is wearing the Karen London “Give Me Your Leather Necklace” in gold.

20+ pictures inside of Rihanna and Rob en route to go-karting…