Aerie Light Blue Ribbed Halter Crop Top S Size small. Model is a size medium. Ties around the neck. Material feels like a stretchy cotton. Raw hem. Pit to pit is about 13.5 inches across but can stretch wider. Total length is about 13 inches long but can be adjusted. 4/27 A3 Pale blue. Pastel. Spring. Summer. Vacation. Y2k. 2000s