Famous families collide!

Gigi Hadid's little brother Anwar and Nicole Richie's half sister Sofia partied it up at The Nice Guy in Hollywood last night, and it certainly looked like they were on a date! Yolanda Foster's son walked the 17-year-old beauty to her car when the night was over, but he stopped short of giving her a smooch goodbye. We bet the only reason he didn't was because there were five million photographers taking his picture!

Celebrity circles are so small!