Showing a little leg? Great. But showing a lot of leg? That's so 2007. This year flaunt what your momma gave you in the must-have knee-length dress. The prim and proper style is turning out to be the It look of the season, and your favorite brands have taken note. Vera Wang offers up an elegantly feminine short-sleeve number with a sexy side slit, while Nanette Lepore took the floral route. Rachel Pally's in on the action with her signature slinky jersey, and DVF does the length (and has been doing it for years) to perfection. So give your mini a rest and give ladylike a try. Find the knee-length dress that suits your fancy, at shopbop.