Wonder Woman hides the sword by tucking it into the open back of her gown, where the blade rests along her spine and between her shoulder blades rather than directly against bare skin. The scene is basically a costume trick: the dress is structured to support the sword, and the angle keeps it from cutting her.

How it works

  • The sword is slid down the center back of the dress.
  • The open-back cut gives the blade a channel to sit in.
  • The fit and posture keep the flat of the sword aligned so it doesn’t dig in as much.

Why it looks impossible

At first glance, it seems like the sword would slice her back, but the movie uses a practical staging trick and costume design to make it look seamless on screen. Fans and explainer videos have pointed out that the sword is positioned carefully rather than just hanging loosely.

In the movie

The moment comes during the gala scene in Wonder Woman (2017), when Diana needs to conceal the “Godkiller” sword before entering the party. The effect became popular enough that viewers later recreated the look online.

TL;DR: She hides it in the open back of her dress, and the costume is built to hold the sword safely in place.