VTG 90s Sleeveless Mock Neck Slinky Stretch Polka Dot Waves Knitwear Top, M

Vintage 1990s era sleeveless, mock neck, slinky, stretchy knitwear top with scalloped polka dot waves pattern, by Sarah B Studio. No size or material listed on tag. Would likely fit a Medium best, see measurements. Feels like polyester fabric. Great vintage condition! Measurements: Pit to pit: 18" Length: 21"