Klassy Network Brami White Halter Dress with built in bra

Good used condition or really excellent. I wore this once for my bachelorette party and now I’m pregnant and can’t see a world in which it fits anytime soon. White, double layers so you can’t see underwear through it and it has a built in bra! Imperfections: pink stain inside bust, but you can’t see it on the outside (see photos) and a small mark on the back. It looks like maybe foundation? It’s very small.