How to Measure Your Toddler
Toddler sizing (2T, 3T, 4T, and the bridging 4/5) is built for children who are out of diapers or transitioning — the seat and rise are cut slimmer than infant sizing, so it helps to measure rather than rely on age alone. Take measurements over light clothing or underwear, with the tape level and snug but not pulled tight.
Height: Have your child stand straight with their back against a wall, heels flat, and barefoot. Measure from the top of the head to the floor. Height is the fastest-growing dimension at this age and the single best starting point for picking a size.
Weight: Use a home scale. Weight matters most for one-piece items — rompers, swimwear, footed pajamas — where a too-loose fit can slip or ride up.
Chest: Wrap a soft tape measure around the fullest part of the chest, keeping it level under the arms. Used for tops, dresses, rash guards, and any two-piece swimwear top.
Waist: Measure around the natural waistline — the narrowest part of the torso, usually just above the belly button. Used for bottoms, dresses, and swim bottoms.
Hip / Seat: Measure around the fullest part of the hips and seat. Helpful for pants, leggings, and shorts that need room in the seat.
Pro tip: If your 2-year-old is still in diapers, consider 24M (infant cut, extra seat room and a shorter torso) instead of 2T. Once they're potty trained, 2T will fit better through the seat and rise.
Pro tip: Between sizes? Size up. Toddlers grow in spurts, and a slightly roomy fit will last longer than a snug one — especially in swimwear and outerwear.
