From Scroop Patterns:
The Modern Fantail skirt is a classic 5-gore, A-line skirt with a fan of sewn pleats that release at mid-hip at center back. It features a waistband that sits at the natural waist, an invisible back zip, and hook or button fastenings at the waist. The skirt ends just below the knee, and is hemmed with a bias-tape hem.
The skirt goes from casual, in light denims and chambrays, to dressy, in luxe prints and satins, with the fan of back pleats adding a interest and a bit of swishy fun in any fabric.