Small=US 4-6, Medium=US 8-10, Large=US 12-14, X-Large=US 16-18. Please check the size chart carefully. Stretchy bodycon style, suggest to iron on low before wearing! Tips: Black will lose its color and it is recommended to wash it before wearing it. This sexy midi dress comes with strapless, off shoulder, boho floral, with elastic band at bust, backless, slim fit hugs your figure well, midi length, simple style, all these features can help you exude your charming effortlessly Our summer dress is made of soft, breathable, skin friendly and mid stretch fabric, with lining, effortless movement, is the excellent combination of lightweight texture and chic detail, it must be your favorite piece in the coming season Casual sleeveless dress is great for daily, vacation, beach, travel, honeymoon, party, birthday, cocktail, club, night out, holiday, prom, outdoor, etc. With the earrings, necklace and heels will make your be the outstanding in any occasion Washing Care: Machine wash with laundry bag recommended, hand wash in cold water, do not tumble dry, do not bleach, wash with similar colors, hang or line dry