Petite dress by Fashion Union Petite, Embellished everything, Plunge neck, Adjustable straps, Low-cut back, Zip-back fastening, Close-cut bodycon fit. Fashion Union helps you overhaul your party-girl wardrobe with its standout collection. Head out-out in its punch-packing dresses, cheeky twosies and playsuits that have all been scaled down to perfect petite proportions.