AQ/AQ Serena Trouser in Blue. - size 2 (also in ) AQ/AQ Serena Trouser in Blue. - size 2 (also in ) Poly blend. Hand wash cold. Pleated detail. Hidden back zipper closure. 31 at the knee and 31 at the leg opening. AQAQ-WP5. 130066. Fresh, bold, futuristic and dramatic, London label AQ/AQ offers entry to a world where the lights are brighter and the music is louder. AQ/AQ features a signature architectural styling throughout the collection of statement party, event dresses and separates.