Négligée
/ˈnɛɡlɪʒeɪ/
noun
A woman's lightweight gown of the eighteenth century.
A necklace of beads, pearls etc.
A state of careless undress or very informal attire.
adjective
Carelessly or unceremoniously dressed.
(of clothing) In the style of a negligee; revealing, titillating.