I have sensitive skin. I had this very same problem with one of my 4 scars being right under the bra elastic. What worked for me were 3 things: using "Scar Away" tape for 3 months (at least 22 hours out of 24 every day); going without a bra (for 8 1/2 months), and wearing tops under loose flannel shirts that were slightly, but comfortably, compressive (I hat anything tight and too close to my skin - I wore these inside out with the seam out). Then after 8 1/2 months I transitioned to Hanes Smooth comfort bra (a tip that I found from another lung surgery patient). Then finally back to a normal bra, although 1 yr, 8 months later I sometimes wear the comfort bras. I got mine at Target and also at Amazon. It's style WHG 796. So, did I feel comfortable not wearing a bra? No, but the tops and flannel shirts helped me to feel a little bit better than my t-shirts. Good Luck. BTW, all my scars are now flat.