This is a Victoria Sport sports bra with a twist.  I've seen sports bras with a strappy upper back, but this one has straps criss-crossing in front over the chest.  The straps in back are wider, adjustable and cross each other.  She is missing her breast pads.  The marked size is large, and fabric content is 96% polyamide and 4% elastane.  I doubt that this girl was worn often, because the white printing on the inside is still nice and dark.  I did use small binder clips on the size small plastic body to spread out the straps over the chest.  If you're wondering what you're seeing, it's the binder clips.  Other than the missing pads, Victoria Secret Sports bra is in very good shape.