Make World Book Day easy, fun, and instantly recognisable with our Thing 1 & Thing 2 kids t-shirts, inspired by the iconic Cat in the Hat story.

Perfect for World Book Day, school dress-up days, book week, parties, or themed events, this simple fancy-dress t-shirt lets kids take part without bulky costumes or discomfort. Just add jeans or leggings and they’re ready for the day.

Printed on a high-quality kids t-shirt, this tee is soft, comfortable, and durable — ideal for a full day of school activities.

Why you’ll love it

✔ World Book Day–ready fancy dress

✔ Cat in the Hat–inspired design

✔ Comfortable everyday fit

✔ Long-lasting, high-quality print

✔ Perfect for siblings, friends, or school groups

Kids Size Guide

Measurements are approximate. If your child is between sizes, we recommend sizing up for a more relaxed fit