A concept based on a bounty request.

1.5 version: It's pretty simple and I think it works as it should, can also do side shots and even back shots (that it was not trained for). Sample images generated with simple prompts like "woman in photo studio". You can increase the tan contrast by making it "tanned woman".

Flux version: Just a test but seems to work in a way. It is not going to fix nudity problem of the base Flux so nipples and genitalia are hit and miss. Can be used with different strength for different effects.