Brody, who turned 36 on August 21, partied the night away with Josie, 22. The inseparable pair couldn't keep their hands off each other and spent most of the night together.
The MTV star arrived at the party just after 1 a.m. He rocked a black T-shirt, jeans and a baseball cap. The model sported a tight crop top and shorts.
After Brody mingled with fans at the hotspot, he jumped on stage and spun some tunes of his own. He played hits like “Runaway” by Kanye West.
Josie and her friend Charlotte D’Alessio joined the reality personality on stage. Brody then planted a big smooch on Josie. She also took a sip of beer from her boyfriend's shoe at one point during the night.
Brody, Josie and several of his friends and family spent a quiet dinner on his actual birthday at TAO Los Angeles.
What are your thoughts on Brody and Josie's relationship? Sound off in the comments below!