Plus-size blouse by River Island Plus, Team with trousers and you're good to go, Crew neck, Embellished detailing, Short sleeves, Split back, Regular fit, Just select your usual size. Now with a collection designed to fit (UK) sizes 18-28, high-street hero River Island scores major points with its plus-size range. Forget awkward-fitting fashion in perfectly cut jeans, jackets and camis.