Hailey Baldwin isn't letting a broken foot slow her down, but who gave her that hickey?! Was it after a late-night love session with on-again/off-again flame Justin Bieber or did one of her girlfriends give it to her as a joke?

On Friday afternoon Hailey stepped out to go shopping in Beverly Hills, and though she was wearing a knee-length walking cast, she was able to get around pretty well. Prior to indulging in a little bit of retail therapy, Stephen Baldwin's model daughter grabbed some fro yo and stopped by a music store with bestie Kendall Jenner. Kendall has also been rumored to be hooking up with the Biebs, but it seems like the girls' friendship is still going strong. Such a bizarre love triangle...

Though it's not clear how exactly Hailey broke her foot, she was fine on Monday night at the Met Gala. On Thursday Hailey Instagrammed a pic of herself in a waiting room and wrote, "when Mom takes u to the doctor," and a few hours later she added a shot of her cast. Hopefully she recovers quickly!