Antique Vintage Cream Formal Wedding Prom Dress with slits, beading, and lace

Possibly Vintage or antique wedding or formal dress with lace overlay and beading. Some staining on the inner chiffon lining but it may be possible to get out with a trip to the dry cleaners or it could probably be easily replaced. Tag inside says 5. Both sides have slits. 16” pit to pit 18” sleeves from pit to end (they seem to be 3/4 length) 14” around the collar 50” from armpit to floor 14” waist when laying flat