Fairy Couple 1920s Knee Length Flapper Party Cocktail Dress The sparkling cap sleeves on the Fairy Couple 1920s Knee Length Flapper Party Cocktail Dress (£37) give it a different feel to the many styles that have spaghetti straps. Image Source: amazon.co.uk Fairy Couple 1920s Knee Length Flapper Party Cocktail Dress £37 from amazon.co.uk Buy Now