I was about to write, “this dress is perfect for a superhero movie!” and then I realized I had no idea what xXx is about. To Wikipedia! Ahem:
After coming out of self-imposed exile, daredevil operative Xander Cage (Vin Diesel) must race against time to recover a sinister weapon known as Pandora’s Box, a device that controls every military satellite in the world. Recruiting a new group of thrill-seeking cohorts, Xander finds himself entangled in a deadly conspiracy that points to collusion at the highest levels of government.
I mean, it could happen.
Anyway, regarding the dress: It’s great, and she looks great in it. I’m not a huge fan of the white satin shoes with it, although I get the thought process — would red have been too superhero-y? — and they’re not making my face hurt or anything. And besides, who’s even looking at her shoes with that fab bodice (and her cute new hair)?