Hot Pink Jacksonville Jaguars Pajama Pants Plaid Pockets Size 6? Womens

I bought this item and super cute, soft and warm. The problem is that it is too big on me. I usually wear a women's small (size 4) but this runs big for a girls large 14-16 or miss sized.. I can wear size 4, but this seems like a 6 in women's. I am 5' 8" and plenty of length too, which I was surprised since it is a girls size. They are super warm, soft and cozy and have pockets in the front.