Size 4 jessica McClintock black formal dress

Long, black satin dress. Purchased here but I can’t get it closed 😩 I have had this exact dress in black and cream and it looks GORGEOUS on. Her dresses seem to run a little smaller than normal. Fit me in the waist, but I’m a lifter and it wouldn’t close where the bottom of my bra is. Please look up her size chart before purchasing. This is something I didn’t do.