Plus-size dress by John Zack Plus, For a look as lit as your plans, V-neck, Short sleeves, Knot front, It's all in the details, Regular fit, A standard cut for a classic shape. Turning catwalk styles and red-carpet looks into a collection of next-level dresses, London label John Zack preps you for the party. Fall for its plus-size range of lace, ruffle and cold-shoulder maxi styles.