Sundress Black & White Polka Dot - Hey Viv ! Retro 50s Style Rockabilly Fabric: 97% cotton, 3% spandex; machine wash Hey Viv ! 50s Style Fit & Flare Dress - Rockabilly Baby. Be the darling of the dance in this 1950's-style, black & white polka dot sundress. The circle skirt has four solid black box pleats (two in front and two in back) topped with small black bows. Dress has side nylon zipper. Sizing Tips - This fabric has some stretch to it which helps make it an easy fit. Be aware that the zipper only goes up to the top of the polka dot fabric, not past the black trim. This means it expands the waist to make pulling the dress on and off easier but does not open it all the way up. Small/Medium (36) fits Bust: 32-34", Waist: 27 - 29", Hips: free, Length Waist to Hem: 24" --- Large / XL (42) fits Bust: 38-40", Waist: 33-35", Hips: free, Length Waist to Hem: 25" XXL (46) fits Bust: 42-44", Waist: 37-39", Hips: free, Length Waist to Hem: 25"