Halloween may be weeks away, but you’re doing the smart thing by shopping early. Halloween costumes often sell out of stores and online retailers very quickly. The later you shop, the more likely it is that your ideal costume will be sold out in your size. The “sexy” costumes often seem to sell out even faster than the regular costumes, since so many women want to look irresistible on Halloween. If you’re in the market for a sexy Halloween costume for 2015, here are 10 great options for women.