This M&S Woman's Silky Floral Knee Length Evening Dress in size 20 is a plus-size option perfect for formal occasions such as weddings or special events. Made from polyester, the black dress features a floral design and a flattering knee-length hem. The dress includes only the dress, making it a versatile and elegant choice for any mother of the bride or woman looking to make a statement at a formal affair. The sleeves are cap but with a lovely slight gathered effect. The dress has a zip at the back. It falls beautifully and is very flattering.