Lilac purple sweatshirt dress for teen girls from British designer Stella McCartney Kids. Relax in boho style, in this casual and comfortable dress with a flying unicorn print on the front and fringe trims adding a quirky finish. Easy to wear, it has useful concealed side pockets and is made in a soft and mid-weight organic cotton jersey with a fleecy feel inside. The Stella McCartney fit can be quite small so choose a size up if you want room to grow.