Kids Only Girls Denim Dress (8-14 Yrs) - 13y - Med Blue Denim - Available at M&S

They can do denim differently with this KIDS ONLY dress. It's cut from pure cotton in a comfy regular fit, with short sleeves that make this piece great for warmer days. Below the classic collar, a row of gleaming silver-tone poppers punctuates the front. Two patch pockets on the chest add a utility-style finish.