From 1956 to 1971, DC published a series called SUGAR and SPIKE, about a pair of tykes who could communicate with each other. In almost every issue, they presented 1-2 pages of "Pint-Size Pin-Ups," which were paper dolls of the characters with outfits designed by readers. Though the main Sugar and Spike characters were drawn by Sheldon Mayer (original editor of Sensation and WW at All-American Comics), it's unclear if the outfits were drawn by him or not.
The only super-heroine outfits ever designed for Sugar were variations on Wonder Woman (paging Carol Strickland!), although Spike got to be Batman (twice), Robin, Superman, and Hawkman.
Here are the three pages featuring Sugar as Wonder Woman, from issues #16, 91, and 93!
For some reason, they're not coming up on this page, so you'll have to click the links...

Bookmarks