Girls Being Undressed While They Are Asleep / Unconscious
 

I'd like to start a thread covering this topic and to illustrate the sort of thing I mean, attached is a clip from a 1974 Britfilm called 'Penny Gold' with Francesca Annis (28 at the time). No nudity I'm afraid, but there is that feeling of helplessness which I think is what makes it sexy.

Warning - if you intend to watch this film (which at present is on You Tube) don't watch the clip first as it is a spoiler.