LK Bennett 'Lasa' Blue Poppy Print Dress The Duchess looked radiant wearing this poppy print LK Bennett sheath dress as she disembarked from the plane at the Royal Australian Air Force base near Brisbane during the Royal Tour Down Under. The LK Bennett Lasa dress is a silhouette-skimming style adorned with snorkel blue poppies, arranged in an artful print against a white backdrop. It has a square neckline and elbow length sleeves.