Monsoon Girls Unicorn Tiered Party Dress (3-13 Yrs) - 5-6 Y - Blue Mix - Available at M&S
With this dress from Monsoon, they'll be party-ready in an instant. It's made in a regular fit, with a t-shirt style top featuring a round neckline and short sleeves. The front is embroidered with a sequin-embellished unicorn in a flower garland. Below the glittery waistband, tiers of frothy tulle create a twirl-worthy effect.