OK, slightly niche question, I accept…. I want to wear a bra with decent support when I exercise (in the hope that my boobs won't be round my ankles any time soon), but would like to be able to wear pretty tops with spaghetti straps etc when hot. Rather than chunky wide-strapped things. BUT - have not been able to find any bras that will work underneath. Have found some yoga-ish ones that look nice, but support is rubbish and typically the straps can't be adjusted. Does this thing exist? Anywhere????