We found a royal blue dress at Forever 21 for $9.99, a shield in the toy department at WalMart for $9.99, and a mask for $2 at Target. I bought red sparkly lame type fabric at Hancock Fabrics from their costume selection for the belt and gauntlets. I used a heavy decor bond interfacing for both, lined them and fastened with Velcro. To add the stripes to the belt, I used a wide ribbon from my stash.
A little tip for sewing with the lame which ravels faster than you can sew it! I sprayed the heavy interfacing with my machine embroidery adhesive spray and then laid the red pieces on top. This lightly fused them together. I serged around the edges just to make sure there were no ravels when I stitched and turned the pieces.
My daughter really wanted a white star on the front bodice. I stitched out a star with my embroidery machine on the heavy decor bond interfacing, carefully trimmed around the edges, and hand sewed it to the front.
With the black boots that she already had, it all came together and she had a great time at the party!