The fifties are back this autumn with a bang! And the must-have skirt shape in this trend is the dirndl. But what is it? It's below-the-knee and full and flirty with a circular cut. This fun and flirty piece is perfect for every woman because it makes the waist look tiny. Everyone from Dries Van Noten to Jil Sander sent them down the catwalk. Grown-up, playful, prim, sexy, retro-modern... and it's a skirt you can throw on with flats, smarten up with a wedge, wear with a shirt in the office, or a simple vest for the weekend.