Petite top by River Island Petite, Add-to-bag potential: considerable, Square neck, Button front, Regular fit, Just select your usual size. River Island takes you from the party to the after party with its fashion-forward styles. Look out for its standout party dresses, feminine details, statement jackets and cool denim including skinny-cut jeans and cute denim shorts, which sit alongside its directional footwear and swimwear ranges.