Tall dress by John Zack Tall, Cut-out front, Stretch waist, High split, When you want to show a bit of leg, Zip-back fastening, Regular fit - true to size. Turning catwalk styles and red-carpet looks into a collection of fresh dresses, London label John Zack preps you for the party. John Zack Tall sees the same bodycon dresses and layers of lace lovingly lengthened for gals 5'9"/1.75cm and over, too.