Thank you for viewing. This is a set including a blouse, choker, and pants. Only tried on once. When I tried it on, the armpits were quite open, so I sewed them up with a sewing machine. You can undo it with a seam ripper, etc. The ribbon has a button on the front collar and can be removed. It's not a single string type. The pants are size S. - Color: White - Size: XS - Design: Collared, with ribbon, with ring belt