For this Tron Legacy Gem costume, you’ll need a couple of essential things in order to pull off the look. If you plan on putting this costume together yourself, then you’ll need to wear a white full body suit and decorate it accordingly. Notice how on Gem’s costume, there are some areas that are grey, so keep those in mind as you decorate. Also, if you don’t already have long blonde hair, then you’ll need to get a long blonde wig and tie it up into a double bun on the top of your head. Make sure that it stands upright on your head and not too far back. You can wear any white boots that you might have lying around–flat or heeled.