British model Cara Delevingne stars in new film 'Paper Towns' which just premiered in NYC. The rising actress invited along her sister Poppy, Joan Smalls and Karlie Kloss to attend the event, and Karlie also brought along her sister Kimberley Kloss. Cara dressed up in a keyhole sparkling mini-dress for her red carpet appearance, while Karlie opted to go neutral in a beige&white dress and nude pointed heels. Poppy impressed in a rose-printed dress and red strappy heels, and Joan arrived in a black rollneck sweater, floral skirt and peep-toe shoes for the event. See the arrivals below!