Shaker Square Granny House Dress Pleats piping- Vtg Bill Sims cotton Floral 24.5

Charming floral cotton granny dress with short sleeves and contrast piping. Perfect for a vintage casual grandma’s day out! I’m unsure of the size. The tag reads Shaker Square by Bill Sims, 100% cotton, 24.5 (whatever that means) It has ample hip room and is super cute with a tiny green and blue floral print. Pleats on front and back. Super well made, high end granny dress! 18” shoulder to shoulder seem 23” pit to pit 25” across hips 43.5” neck to hem Slight stains in a few places that I didn't see at first.