Sandy Speak Easy Flapper Costume - Plus Size 3X - Dress Size 26-30 This 1920s flapper costume includes an elegant stretch velvet gown in dark blue with attached shoulder drape. The 1920s flapper costume comes in adult sizes X-Small, Large, Medium, Small, X-Large, Plus Size 1X, Plus Size 3X. The necklace is not included with this 1920s flapper costume for women.