NWT Zara Kids Sz 13-14 Dark Gray Skirt Coverall Jumpsuit Dungaree Overalls. This Zara Girl denim skirt overall is perfect for a casual occasion. With a sleeveless design and metal button closure, it's a stylish addition to any wardrobe. The dark gray color and American modern theme make it a versatile piece for summer, fall, and spring. Made from high-quality denim fabric, it's both comfortable and durable. This one-piece skirt overall set includes one skirt and is available in size 13. Not only is it fashionable, but it's also practical for everyday wear.