The listing, XL About a girl light weight top has ended.
XL, About a girl, Dark Blue & White, light weight, semi sheer, sweater top.
When measuring I did armpit to armpit & got to over 30" because this material is so stretchy & the sleeves are the type that are lower (see pic).
Across the bottom, seam to seam, while relaxed measured about 14" but I was able to stretch it to 20" +.
It has a scoop neckline. From the center of the scoop to the bottom is 18.5". The back is 23".