Affiliate Marketing Secrets

Here’s the dress
http://www.boohoo.com/usa/dresses/ps15-dresses/icat/15-pound-dresses/evening-dresses/polly-mesh-one-shoulder-wrap-front-bodycon-dress/invt/azz67068?utm_source=AWIN&utm_medium=AFF&cm_mmc=Affiliates-_-Affiliate_Window-_-85386-_-0&awc=2319_1347234161_37ab394bb94e49642982d4dd4ed41fbf&fb_source=message
I would get a size XS, but it’s in woman’s and I’m 16 years old. I’m pretty petite too, would it fit alright? I wanted to wear it for homecoming