The hemline of these dresses typically hits somewhere from the upper to mid thigh. Cocktail DressEdward Berthelot // Getty ImagesA cocktail dress can be any hemline from a mini to midi length. Wrap DressEdward Berthelot // Getty ImagesWrap dresses normally have a v-neck and a front closure that wraps around the waist, accentuating it above all other bodily features. Sheer DressEdward Berthelot // Getty ImagesSheer is one of the hottest trends that all our favorite celebrities and fashion people have been wearing. Slip DressEdward Berthelot // Getty ImagesBasically, these are sultry nightgowns designed to be worn outside.