Stewart, who looked to be in a great mood while sitting and chatting with friends, showed off an American Eagle bra under a loose fitting top and AE cut off shorts.
The young actress was also wearing a Baltimore Orioles hat that she apparently borrowed from beau Robert Pattinson.
The couple took in a few of the shows that night, and cozied up at one point during the Radiohead concert. Aww.
We can’t wait to see Kristen and Rob at Cannes.