When the event planner slaps a hello sticker on Shaw's jacket, it is attached to the flap connected to her hood. Moments later when the scene goes back to Shaw, the sticker is tucked under her flap.
After the second woman slaps Reese, he rubs the side of his face as if to tend to any lingering pain from the slap, however he was slapped on the opposite side of his face from the side he's rubbing.