You can make an AI woman nude just by adding the prompt {(nude)} or {(naked)}, but it is harder to get them to be partially clothed.

{(topless)} generally works to make a woman topless.

If you want to make a woman have clothes but being exposing their breasts or pussy you need to have them wear the right clothes and have the right attitude.

{exhibitionist} will tend to make a woman expose hereself inspite of her clothes.

{sexy} helps get the woman to expose hereself, it also tends to make her face, body, and clothes be sexier

{((coat))}, {(nude)}, {((((bare breasts))))}, {((((bare pussy))))}, {exhibitionist} will usually get you a woman in just a coat flashing her breasts and sometimes her pussy.  In a Realistic model it is usually just her breasts.  In a more porn model it usually also exposes her pussy.

{((bathrobe))}, {((((bare breasts))))}, {((((bare pussy))))}, {exhibitionist}  does the same but with a bathrobe

{((shirt jacket))}, {((((bare breasts))))}, {exhibitionist} has the woman wearing a jacket that looks like a shirt, open with her breasts exposed.  Sometimes this looks more like a coat, sometimes more like a shirt.

{((blazer))}, {((((bare breasts))))}, {exhibitionist} has the woman wearing a blazer (suit jacket) and exposing her breasts.  Great for in an office.

{((cardigan sweater))}, {((((bare breasts))))}, {exhibitionist} has the woman wearing a button down sweater, unbuttoned and open, exposing her breasts. 

{((keyhole sweater))}, {((((exposed breasts))))}, {exhibitionist} has the woman wearing a sweater.  Sometimes it has an opening for her breasts and other times it is short and leaves her breasts exposed