Beautiful preowned vintage dress, likely 1970s or 1980s..  Peach, marked a size 7/8.  Would fit a modern Small; fits the mannequin perfectly with some stretch in dress to spare.  Measurements of dress unstretched are 16 1/2" chest flat; waist 12 1/2".  Length is 50". Measurements of mannequin wearing dress in photos are 14" waist and 35" bust but there is room in the bust for another two inches or so, so I'd say this could go up to a 36-38 with room for cup size.  I'd say a modern size 4/6.  small spot on front of lace; then there is dirt and spots on bottom hem of dress.  Loop for hook at top of zipper has come undone.