Nobody's Child Women's Pure Cotton Puff Sleeve Waisted Midi Dress - 16 - Black - Available at M&S

For effortless daytime elegance, pull on this puff-sleeve dress from Nobody's Child. The waisted style flares gently to an A-line skirt, which falls to an elegant midi length. It features decorative covered buttons down the front and handy side pockets, too. This piece is made from pure cotton for a breathable and airy feel.