Vintage Floral the neck button up slouchy cream neutral cardigan size medium

All measurements are made flat. Pls note this piece is pre-loved & does have two discolorations have seen in pics9&10 Pit to pit approx 19.5” Pit to hem approx 9” Sleeve length approx 18” Vintage sizing can be different to modern day, pls reference measurements for best fit. Granny core, cottage core, mushroom picker, Anne Green Gables, frog core, Road to Avonlea,