Long white dress with sweetheart neckline

Long white dress with high slit and sweetheart neckline. Very elegant and in mint condition. Only worn once. Material is not see through. Dress is tight and does up with a zipper and clasp in the back. For a very petite person. I am 5”0 but wearing 4 inch heels. Bust size 32B. Waist size 24 and hip 34. There’s no built in bra but it’s very tight in the bust and the material is thick so no need to wear a bra.