Stella McCartney Kids Sweatshirt. Girls grey 'Rebecca' zip-up sweatshirt by Stella McCartney Kids, made in a soft sweatshirt jersey. This lovely long-sleeved design has a colourful floral print. The fit can be quite small, so Stella McCartney advises you to choose a size up if you want room to grow. Size - 4 years RRP: £84 Ref: B6