The Lilly set is a triangle-style top that is extremely adjustable. You can tie it around your neck and back for the perfect fit. The fabric is also able to slide/be scrunched to control the amount of coverage. This set is double-lined with an incredible buttery-soft & ribbed fabric. Everything is true to size, but it's recommended if your'e between 2 sizes to go with the larger option. In the pictures the model is wearing an XL top & that's the size she wears in all the other sets as well! There's a size chart on the website, but always feel free to reach out with questions :)