Go one size larger. I ordered a Medium and am a 32 or 34 C/D....it is much too small. The lime green has more stretch, which I also ordered, so that is better but generally this fabric is used...the lime green is softer.  I just cancelled 3 more that I ordered, but am going to reorder, if they have them in a large since I like them as a sports bra and night bra.  HANES is one of the best....I give it a 5 star, generally. UPDATE: I ordered the others in LARGE...arriving soon. Will update. Anyway, NOT RETURNING....will give to Salvation Army or someone like them who can donate....would be great for any female in need....