Lafayette 148 Women's Linen Button Down Plaid Top

This is a women's Lafayette 148 New York 100% linen button down shirt in a white turquoise and green plaid print. Its in EUC but is missing the size tag. Some measurements taken flat are as follows: pit to pit is 23", top of shoulder to bottom of sleeve is 24" and top of shoulder to bottom hem is 30" If I had to guess size I would say it fits like an XL.