This set is a one size only.  3Piece set comes complete with Bra, Garter, and Thong. Can fit size small however I don’t recommend it if you don’t have any boobs, you will not like the way the bra fits. Model is wearing a size medium fills it out very nice but was not able to wear the garter due to it being too small. Depending waist size the garter part may not fit. This set is nothing like I thought it would be which explains to price. Cute set for the right body shape.