I wear a sports bra to bed, seems to help then not be so sore!
I just bought a nursing bra that seems to be helping. It's more like a sports bra but it's a nursing bra as well and it's tight. Although after wearing it for 12 hours today I was very happy to take it off. My girls needed to relax! LOL... I just wish they weren't so tender. My husband went to go touch me (lightly) and I just about hit the ceiling!!!
Bind them as tight as you can. I know it sounds like it would make the pain worse but it's something my sister told me to do. I tried it and it actually works. I'm 27 weeks and i've had tenderness on and off too.