Want something sexy, tight, and under $100? Alexander Wang's new stretch tank dress, part of his T by Alexander Wang lower-priced line, is just what you're looking for. The front keeps the look modest with a high neckline, but turn around and you've got a different story. The back features a large cutout circle that reveals almost all of your shoulder blades and backbone, though not entirely. And with 5 percent spandex, it hugs your every curve. Pair it with some killer heels and you're all set.

$83 at revolveclothing.com.