Windsor Prom formal long sequin dress size Med

Windsor long formal dress. Perfect for Prom! Sequin dark purple/black, stretchy, side rounded open slit. My daughter wears a size 3 in Jr size dresses and size 4/6 in lululemon for reference. She is 5’5, 132, athletic build. It was hemmed up 2” and fit her perfect with a 3” heel. Worn once for about 2 hours.