Tan Liner for Wedding Dress Low Back Floor Length Dress

Form-fitted, zip closure low back nude liner for wedding dress (or a sweet dress on its own!) I bought this as a two-piece that came with lace on top. I'm keeping the lace but don't need this, and have never worn it. I'm saying size 4 but it was made to my measurements, I'm between a size 4/6 and it's nice and snug around the waist and thighs. The boobs need fixing, they're way too baggy, I'm a 36B. Comes with built-in cups. Floor-length. It's double lined (see last photo), 100% polyester, slight stretch, nude/honey/tan colour. Any other questions please ask! Sorry my photos aren't full height, Poshmark crops them. It's a floor length dress and I'm 5'7" without shoes