Free People Adella Slip Dress. Your new go-to slip dress, this flowy frock features our best-selling Adella bralette at the top with boho crochet lace details and a light and airy skirt with a tiered ruffle hem. Smocked stretchy back. Thin, adjustable shoulder straps. Lined at bust. Semi-sheer. Length: 29.5". 60% cotton/40% nylon. Skirt: 100% viscose. Hand wash. Imported.