Hurley x LoveShackFancy one piece swimsuit rashguard nwt

I have 2 of these as I bought them not sure on kiddos size. New with tags Hurley x LoveShackFancy collar swimsuit/rashguard. This is so stinking cute with zipper back and long sleeves. Size large and X- large. They fit like a 12 and 14-16. Or the x-large could be a women’s x-small too. Thanks!