This links with all those things we associate with bed, with sleep, with being undressed without protective clothing, and perhaps with being sexually attractive and available. This latter means not only actually feeling sexual and desirable, but also wanting to be desirable but feeling you might not be.
Women often think ‘sexy’ negligees and underwear turn a man on, but this is often not the case. It sometimes feels like a ‘hard sell’.
So in a man’s dream it may certainly link with sexual arousal, or a woman’s attempt to arouse you sexually, but it depends entirely on the drama in the dream and your feeling responses.
Useful Questions and Hints:
What am I doing in the dream and what does this suggest – sex, rest, not prepared for the day?
What are the feelings aroused by the negligee and where are they met in my waking life?
Is this a negligee I know or own – and what memories, events or feelings are associated with it?