From Style Arc:
JENNY SHIRT: Tailored fitting shirt – great in crisp white. Over jeans or wear to office.
FABRIC SUGGESTION & DESCRIPTION: cotton poplin, suitable for slight stretch fabrics
SIZES: 4 - 6 - 8 - 10 - 12 - 14 - 16 – 18 – 20 – 22 – 24 - 26 - 28 - 30