Petal & Pup Xiomar Black One Shoulder Midi Dress 6. The Xiomar Dress is the perfect choice for your next event. This beautiful dress features a one shoulder silhouette with a thin adjustable strap, gathered waist and side split. Style with heels and statement earrings to complete the look. midi length. one shoulder style. thin adjustable strap. gathered at waist. side split. invisible back zip. partially lined. material - 95% polyester/ 5% spandex. petal and pup tag has been removed. pit to pit 16", waist 14.5" across, length 47".