I've pieced together all of the components you need for an easy DIY Elsa costume that's cute, recognizable, and sexy without being overtly. Olaf and Anna are popular, but it's Queen Elsa who sits at number one. Arts Center in Brooklyn to create a DIY Elsa costume for under $. Of course we had to do Elsa from Frozen's famous dress! Corset: I'm trying to make an Elsa costume and.