I was prompting for a woman in a red dress but Bing provided these instead. I'm not complaining.

Usually Bing is ultra-conservative and would never allow a prompt that described a nude woman in a chocolate fountain. So conservative that when I specified a short, off-the-shoulder red dress, I always got the dog. Just 'red dress' worked and usually gave me a longer dress with more fabric, until these two images appeared.

What exactly was the prompt?

I see a trip to fountains coming soon, for some ladies

I don't usually share prompts anymore, as they will stop working when used too much. Here is what I was using:

Close-up photograph of a large, ornamental chocolate fountain on a lawn at a factory which is filled with chocolate. A woman in a red dress is emerging from under the chocolate, covered in the deep chocolate in the fountain. She is covered in chocolate from head to toe. It is a hot summer day. The empty lawn, factory and other industrial buildings may be seen blurred in the background.

I have no idea why she was nude. Perhaps 'hot summer day' triggered it. I have no clue how Bing works and doesn't work the next minute.

Please let me know if you had success with this.

You can indeed use words like "hot summer", "heatwave" etc to generate images with less clothing.

Sadly it doesn't help much since at the end of the day the prompt needs to pass the visual check. It only really helps if you use a setting where it's "normal" to be dressed lightly.