Le Petit Trou hearts corset bra NWT

This is so so pretty and I was devastated to find it doesn't fit me! Tried on once and I can't return it. This designer calls it a Medium but the waistband on the largest hook feels like my 34 bras. The problem for me is the cups are more of an A or B, so in my book this is a small or a *very European Designer Medium*. There's a little stretch to the tulle and room for overflow. The fabric is sheer with shiny gold hearts embroidered all over, 10 pieces of boning, and a ruffle at the bottom. Still for sale on Yoox for $55.