Rob Kardashian celebrated his 22nd birthday with his girlfriend Cheetah girl Adrienne Bailon, on April 12 at TAO Beach in Las Vegas.
Adrienne, 24, and Rob's sisters Khloe and Kourtney surprised the birthday boy with a tray of cupcakes. "Rob was having the best time," a fellow partygoer tells OK!
He continued, "He and Adrienne were kissing all night and looked completely in love."
Rob's overprotective sisters gave Adrienne the seal of approval after grilling her on their show Keeping Up With The Kardashians. We hope Adrienne can!