When choosing a ready-made outfit for a race, looking for a costume that has sexy in the title might be a good idea. Sexy costumes are typically skimpy, with tank-top style sleeves and a short skirt -- great for running. Watch out for materials that might cause chafing, though, like tulle and lace. Costumes made for the Halloween market are best for shorter runs -- not recommended for half marathons or longer distances. Here are some fun Sexy Princess costumes that are ideal for Disney races, Halloween-themed runs, or other costume-friendly races!