Corset bra with lace and low back size 42c

I purchased this for my wedding for $70 but unfortunately it is too big, only tried on for no longer than 5 minutes about 3 times, now that I need to buy a different one I am selling this to help cut loss, so my loss is your gain! I normally wear a 38 to 40 D and this fit great around the and buttoned and it is very slimming but the cup size was too big