Vintage Andrew St John Polka Dot Button Up Blouse

So pretty! Vintage Andrew St John polka dot button up blouse. Navy blue with red polka dots. There is gathering on the shoulders and a built in scarf tie at the neckline. There is a small hole on the back towards the top. No other flaws. Measurements taken lying flat are: Pit to pit: 17" Length: 23.5" Sleeves: 21"