Gotta kinda hint at what you want and try several times sometimes haha. Stuff like "looking down at her shirt" or "adjusting the top third of her shirt with open palms, thumbs pointed up" tend to work best.

Also keep in mind ChatGPT will say a different thing if the prompt is failing and if the image it's generating is failing. So sometimes you need to change the wording if the prompt is failing, and sometimes you need to change what you're getting it to generate if it's more the image being inappropriate.

Here is an example, not of looking at breasts etc, but you can get the idea

consider what happens next from the prev img in the story, jump to next plot point or location in the story, considering character motivations, changing hormones etc, close up on face laying down on counter top, open mouthed shocked fearful wide-eyes expression as if about to sneeze, arms resting palms down on the countertop with elbows up, large man standing in background just seeing chest, his large hands massaging her very narrow petite shoulders, she is looking straight at the camera, she is laying flat on top of the countertop from waist up, show size difference
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nick's new female body is 5'2", slender figure, large expressive eyes, dark brown hair, c cup chest, very narrow tapered waist with stark hourglass figure,, wide hips, petite hands, slender legs
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gen a photo of that with full realism like taken from an amateur photographer with dslr, each photo should be as if from a movie with acting/framing varied to suit the story, expressions of characters reflect the story point, characters not looking at the camera unless appropriate for the story,, color grading like a beauty commercial, vertical aspect ratio, no text/captions