Well, I'm normally 36D, and when I try for a 38C, it just doesn't work. My right breast (the bigger one) spills out of the cup. However, when I bought my long-line bra for under the wedding dress, it was a 34D and fit perfectly - I guess because it wrapped all the way around my midsection and I have a pretty narrow waist. But when I tried a 34D regular bra it was too tight around my ribs. UGH!
