Rennia Rib Knit Short Sleeve Button Front Dress by AFRM Size info: True to size. XS=2-4, S=4-6, M=6-8, L=8-10, XL=12. Size Small (4-6) 34" bust; 27" waist; 35" hips. Details: A collared rib-knit dress with a buttoned front lends preppy versatility to your warm-weather wardrobe. 32" length (size S) Spread collar Short sleeves Front button closure Rib knit construction 86% polyester, 9% rayon, 5% spandex Machine wash cold, tumble dry low