Girl's Christmas Tunic/Nightgown

SMOKE FREE HOME. Sold to me last year as a ladies XL, NOT! This item is for a CHILD. I'm sorry, I don't know what sizes correspond to a girls xl, please see measurements below. Very pretty, never worn, new without tags. Perfect for a Christmas party or as a Christmas morning present opening picture op. Measurements: Top of shoulder seam to hem - 31" Armpit to armpit- 18" Center of arm seam to sleeve hem- 14"