I have not been able to wear a bra for over a year, but now I think I've found something that works. I hope the moderators will allow me to use the brand name as it's the only thing like it I've been able to find.
To the moderators: If this is not allowed could you please remove the name and leave the description, and maybe anyone who is interested could PM me?
What I found is a very very light weight sports bra. The lower band isn't really elastic its just a more tightly woven part of the very soft strechy fabric. At least for days where I am having a good day, or even moderate, I am able to wear it when at work or running errands on weekends.
I'm putting this part seperate so the description is there even if this part isn't allowed. The brand is Jockey and it's called a Comfie's crop top.
There may be other brands out there I haven't seen that are similar. I was at the point of making something. It's way too hot in this area of the country to wear a cami or tank top and then another top over it in the summer! Of course in the winter, the cami or tank top is a good thing.
I'm going to try wearing it to walk on the treadmill soon. I think that I've now got enough support for that, finally!
Hopefully this can help someone else.