Fans of the original know that the Major often appears to be naked while she's on the job, but she really isn't. She wears a thermoptic bodysuit that allows her to become invisible. According to IGN , producers of the live-action movie knew they wanted the suit to be a big part of the flick, but they had to find a way that wouldn't draw the ire of the MPAA ratings board and also fit the tone of their vision. So they came up with an elegant solution. Instead of relying on CG effects to recreate the Major's nude look, costume designers worked with Peter Jackson's Weta Digital to build a form-fitting costume for Johansson that makes it obvious that she isn't actually running around in her birthday gear. Designers built a completely silicone suit for Johansson using digital scans of her body, and the entire process took about two months.