Petite dress by John Zack Petite, Unlined sleeves and back, For some see-through sass, Plunge front, Tie waist, Layered ruffles to skirt, Regular fit, No surprises, just a classic cut. Turning catwalk styles and red carpet looks into a collection of affordable dream dresses, London label John Zack channels a fun, party girl aesthetic. Now perfectly designed in petite proportions, the John Zack Petite collection is party prepped with jumpsuits, bodycon dresses and lashings of lace.