Here at Unique Vintage, we positively adore authentic flapper dresses. They’re some of our most delightful styles, after all! But anyone who fancies flapper fashion knows that a head-to-toe flapper style just isn’t complete without a flapper slip. These essential undergarments are vital when you’re dealing with a sheer flapper dress — or any other sheer dress, for that matter — and also help smooth and slim so your gown looks fabulous from neckline to hemline.