Mia's moving slowly through the crowd and checking out people's costumes. There's some she doesn't recognize, but most people seem to be dressing from the movies, which she's seen.

She spots yet another Captain America, this one with his back to her, and makes her way over to him. "That's one of the most popular costumes here tonight. There's at least six or seven others."

[Wasn't sure if he's wearing the mask or not :)]