A negligee is a form of lingerie that looks like a short sundress. it covers everywhere from the breast to the mid thigh. usually made of a soft fabric. and usually made to be sexy nightwear.

sexy underwear/lingerie

a loose robe, usually of a thinner fabric than a (similar) housecoat - for example cotton voile, polyester satin or nylon, with front closure by buttons or ties, and worn over a nightgown

In rural Alabama women often wear a sheep costume to lure men into bed.

When two options are roughly equally beneficial. A play on the word negligible withe the use of negligee.