Tall jumpsuit by John Zack Tall, Done in one, One-shoulder design, Ruched detailing, Wide leg, Fitted at the top, flowing at the bottom. 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.