Aprils 50s Rockabilly Classy Black Vintage Swing Evening Cocktail Party Dress This Dress has a gorgeous contrasting polka dot collar, that sits across the collar bone. Side zip fastening, with a stretchy fabric for that perfect fit. For more of our Aprils Online dresses, just click on the Blue 'Aprills' above. It has 8 inverted Polka Dot panels and measures 34 inches - 86 cms from under arm to hem. This Dress has been photographed with a 24" petticoat underskirt.