CALS Bright Aztec Maxi Dress--no size in label

Y2K 80s' 90's CALS Bright Aztec Spaghetti Straps Maxi Dress Love the colors in this Southwestern Dopamine Long Maxi Dress. lining inside/ short dress length I'm not sure about the size! This is woven fabric, so it doesn't give or stretch like cotton knit. Size is missing--please check measurements--probably a small or med 19" pit to pit 50.5" underarm to hem Additional Information: lining inside/ short dress length