Vintage Silky Red Cheongsam Maxi Dress with Side Slit

Purchased in the 90s in a second hand store outside of the city. At the time it was a bit big so was altered. Has not been worn in a very long time…way too small now. Measurements are: PTP Waist Length Side zipper. No fabric tag but was dry cleaned at some point and tagged silk by the dry cleaner. Call outs are darts have come loose on one side and noticed mild stains in day light & some loose threads. Still in good condition but not for a super picky buyer looking for something in pristine condition. Lots of life left in this beauty! Approximate measurements in photos: Length from collar 53” side slit 21” PTP 18”, waist 15”, hips 18”. Fabric does Not have a lot of stretch. Would fit S-M depending on proportions. I think I was size 6? When this fit. Open to CCO requests