Yellow corset dress

Serina Mini Dress I wore this 1 time and it has been washed. There are dark marks (1 small area at corset and dark marks at the end of the back of the dress) I assume that this will come out if you professionally dry clean it. But it doesn’t show too much when the dress is on. Colour: Yellow. Polyester Spandex. Stretchy Satin. Double layered. Panelled bonding with strapless. Ruched side. Back Hidden Zipper. Mini Length. Model is a size XS & Is wearing a size XS. She is 160cm Tall and wears a size C Breast cup.