I loved the fact that this dress is cotton. it is a thin cotton, and you can see in the photos that she is wearing a black slip with a thicker strap. mine came with a nude slip. i'm thinking they all come with a nude slip. i'm not sure why they showed the dress with the black thick strap slip unless it was to show the dress as a thicker cotton than what it actually is. the dress is adorable though which makes it hard for me to decide whether to keep it and hope mine won't tear easily or to retur