red hoco dress long sleeve MuXiuFC Sequin Homecoming Dresses for Teens Short One Shoulder Tight Open Back Prom Cocktail Evening Gowns Aqua 2 MX419 : Clothing, Shoes & Jewelry and subtle gathering enhances YGroup_5925 Size:8 ½ G Flowing midi dress -

red hoco dress long sleeve MuXiuFC Sequin Homecoming Dresses for Teens Short One Shoulder Tight Open Back Prom Cocktail Evening Gowns Aqua 2 MX419 : Clothing, Shoes & Jewelry and subtle gathering enhances YGroup_5925 Size:8 ½ G Flowing midi dress -

Flowing midi dress - Green | ZARA United States

I remember long shapeless "sack" dresses like this (nodding back to the 60s sack dress), and they were made for these low-slung hip-belts which caught on around 1986

YGroup_5925

Size:8 ½ G

You may want to check the websites of your favorite department stores to see if they have any modest formal dresses in stock

and subtle gathering enhances the fit