Rihanna & Rob Kardashian: Burbank Buddies

Posted Sunday August 26, 2012 9:45 AM GMT

Releasing her inner child, Rihanna joined
Rob Kardashian for some late night go-karting in Burbank on Saturday night (August 26th).

The "We Found Love" singer gave photographers the bird as she went with the high-school throwback look in a varsity jacket style dress and black Chuck Taylors. The 25-year-old reality star wore a gray sleeveless shirt, brown pants, and blue sneakers, but later slipped on a green button-down shirt.

Later that night, the two joined Rob's girlfriend and Rihanna's friends for dancing at the Playhouse club in Hollywood.

On Friday (August 24), the Barbados-born star's fiery attitude emerged again after Joan Rivers criticized her after her interview with Oprah.

The fiesty fashion critic tweeted, "Rihanna confessed to Oprah Winfrey that she still loves Chris Brown. Idiot! Now it's MY turn to slap her."

Not one to back down, Ms. Fenty responded, "@Joan_Rivers wow u really do get slow when you're old huh?" which was later deleted, but replaced with "[s]lap on some diapers."

Photo Credit: AKM-GSI

filed under Rihanna, Rob Kardashian