Thank you, ladies! I have not had luck with shapewear, possibly not due to constriction, but simply to having something very close to my skin - I also cannot wear turtlenecks because I cannot stop feeling that they bother my neck. But I will look into corsets that lace up and thus allow for a looser feel.

Sepilda, I am about size 18 so size 14 does not seem large, but I do understand that if you are otherwise a much lower size, going up to accommodate the breasts feels unpleasant. I think TORRID has solutions for that - they specifically call out such shapes. And the current fashion of caged tops might be right what you need - they do not feel constricting and at the same time play up the top assets.