Hay Ladies For tights bodysuits (Unitards) and other wonderful lycra and spandex peices in a huge array of colors see http://www.welovecolors.com/ awsome site with everything you could possibly need. This site is also great for fishnets and funky tights any kind and any color, regular, underware attached, thigh high, striped you name it they've got it!
Also if you need and underlayer like a flesh tone unitard ot leotard there are two really good sites (both dance based) www.discdancesupply.com and www.bodywrappers.com.