White Stuff Women's Jersey Round Neck Knee Length Smock Dress - 20 - Med Blue Denim - Available at M&S

This pure cotton jersey smock dress from White Stuff is a breezy, laidback take on a timeless denim look. It's cut in a regular fit, with neatly fitted long sleeves and a round neckline. Button-through fastenings on the bodice create neat detail, while pockets at the hips make room for essentials. The hemline sits at a versatile knee length.