Maya - I started wearing this sleep/leisure bra a few months ago, and I love it. It is NOT for exercise - only for lounging and sleeping.
I don't know if it would work for you, because it starts at band size 34, but it might be very easy to have altered, since it closes in the front. I am a DDD (recently up from a DD, sigh) and I wear the 34CDE. It fits and feels fine. The white and ecru are the only colors you can get in 34 band. It costs $20.00
http://www.herroom.com/Leading.....-Bra.shtml
I ONLY wear it at home. It does NOT have support for going out. I mean - I wear it to go get my mail or get the paper from the end of the driveway, but I would NOT wear it out and about. It does not have any real support for wearing under clothes, but it is soooo comfy for wearing at home. Also - if I'm lounging around at home and a neighbor knocks on my door, or the UPS guy, or whatever, I feel fine wearing it, whereas I would never stand in front of a stranger without a bra under my clothes. Do you know what I mean?
I usually change into my "lounging" clothes after dinner, and I wear it to sleep as well. It has a front closure, which makes it super comfy to sleep in. I feel much more comfortable with a tiny bit of support at night, and I also feel better knowing that if there was some emergency during the night I could leap up and out of the house without being totally embarrassed. (Yes, this is full-on neurotic city, but this is how I think.)