Vintage 80’s Beaded Knit Tank Top

Vintage beige beaded knit tank top from the 80’s in goos condition! I believe some of the beads are missing from a small area in the front but if so it doesn’t affect the design very much! It’s tagged a medium and measures 16.5” armpit to armpit, 20” top to bottom (including the strap), and 13” across the bottom hem. I think this would best fit a small. Any questions lmk!