After I had DD the physiotherapist who came to see me after the birth suggested I use a belly binding type wrap as my muscles were very separated. I don't know if it was related to the first CC or not. He suggested it may have been the way I carry my bub (all out in front and pointy) and that I was pretty slim to begin with. He did a test with me laying down and lifting my head from the floor. To check separation you feel with your fingers just above your navel how far the musles feel apart. "Normal" is approx 2 fingers width, I could easily fit 4 fingers between mine. I think the support helped. Definitely felt good to have the extra support anyway!