Sofia Richie Justin Who? I'm Doing Just Fine

9/21/2016 6:28 AM PDT

Sofia Richie is Doing Fine After Justin Breakup

Sofia Richie is one resilient 18-year-old ... hitting the town just days after breaking up with the Biebs.

Justin's ex chowed down at Craig's in WeHo Tuesday night ... and she clowned with the photogs on the way out.

She's not giving up on love ... good to know.