Kristen Stewart looked a bit bummed out when X17 photographers snapped her at Los Angeles International Airport on Tuesday afternoon.

Might this have something to do with the fact that her former flame Rob Pattinson JUST got engaged to girlfriend FKA Twigs? Rob and his lady love were only together for six months before he popped the question, so that's definitely gotta sting! Then again, K. Stew was the one who cheated on Rob back in the day, so this is kinda on her!

The 24-year-old actress had her headphones on when photographers asked about Rob's engagement, so it doesn't seem like she heard the questions. But where's her lady love Alicia Cargile? We haven't seen the two together in a few weeks and they're usually joined at the hip!