When Elsa transforms her dress into an icy blue gown, she gets a corset covered in sparkling sequins. Since Frozen hit theaters last winter, dozens (if not hundreds) of cosplayers have recreated the gown. Elyon Cosplay came up with a cool if tedious method for making the dazzling bodice: she used craft foam. She put about 20 hours of work into piecing it together, but it looks gorgeous and screen accurate. She used glue, rhinestones, a white corset base, and craft foam. You can buy pre-glittered craft foam or glue glitter onto the foam sheets. You may have to use both methods in order to get the different colors.

She created a tutorial that goes over the basics, and it starts with cutting hundreds of small rectangles out of the craft foam pieces. You’ll glue the pieces onto the corset (while it’s on a dress form!), and you have to pin hem in place as you go in order to give the glue time to dry.

See the complete tutorial at DeviantArt.