I've been fitted for bras, using a Wacoal bra, so I bought the size I wear in those and the Bali 32D just doesn't match up.  The cups are a bit larger, but the band is quite snug.  I would try a 32C, but I'm afraid the band would just be too small.  I'm disappointed because I really need the u-back for the straps to not slip.  It's hard to find a bra with straps that won't slip because my shoulders and back are narrow.