My niece wanted to be a princess for Halloween in 2016 so I decided to make her something unique, a color changing light-up LED dress. I over-complicated the build as what normally happens normally the first time you make something. I learned a lot from the process and many ways to improve upon the design, hopefully I can help someone else looking to make an LED dress. All in I spent about $120, $45 of which were the dress and petticoat.