It's been said that
Ginger Rogers did everything Fred Astaire did, only backwards and in high heels. Another underrated female counterpart to a male lead was Supergirl.
When I was a kid I knew that supergirl changed costumes a couple of times, but I had no idea the sheer number of outfits that DC Comics made that Supergirl wear! I found this documentation of her extensive wardrobe via Scans Daily.
Just click on the pictures to see the larger versions.