Main street costumes has costumes for one and all. I think the sizes start at a child's small, i.e. about a size 6 and go thru adults xxl.
The costumes are rather pricey, but if you want something unique and that fits well, this is the place to be. They also have very detailed mask for the ocassion, costume accessories to build your own costume, and very good face paints that don't wash away with the first sign of sweat beading up.
We have dealt with them for several years, for this or that and have always been pleased, Margo, the owner, is quite a business woman and with her customer satisfaction is always #1.
The shop is located in downtown Thibodaux at 604 W 3rd street.