Top 10 Book Week Costume Ideas for Kids (Easy & Popular)

Book Week is one of the most exciting times of the school year, but choosing the right costume can sometimes feel overwhelming.

To make things easier, we’ve put together 10 popular and easy Book Week costume ideas for kids. These ideas are simple, fun and perfect for school events.

1. Princess Costumes

Princess outfits are always a favourite for Book Week. They are easy to wear, instantly recognisable and perfect for school parades.

You can explore more styles in our Princess Costumes collection.

A favourite kids pick is the Kids Pink Princess Royal Dress-Up.

2. Animal Costumes

Animal costumes are a great option for both boys and girls. They are fun, comfortable and work well for many Book Week themes.

Browse our Animal Costumes to find simple and popular choices.

Try the Kids Grey Wolf Costume with Mask & Gloves for a Little Red Riding Hood or Three Little Pigs link-up.

3. Character Costumes

Dressing up as a storybook character is one of the best ways to celebrate Book Week.

Take a look at our Character Costumes for more inspiration.

The Kids Dog Man Comic-Book Outfit is a top pick for fans of Dav Pilkey’s series.

4. Easy Costumes

If you’re short on time, simple costumes are the best option. Many outfits can be worn straight away with minimal effort.

Check out our Easy Book Week Costumes for quick ideas.

The Kids Ninja Turtle Shell & Weapon Set is a slip-on-and-go favourite.

5. Dinosaur Costumes

Dinosaur costumes are especially popular with kids who love adventure. They are fun, bold and always stand out.

Explore our Dinosaur Costumes for easy options.

The Kids Inflatable Green T-Rex Suit is a school-parade showstopper.

6. Fairytale Costumes

Fairytale costumes are perfect for Book Week and work well for many school themes.

You can browse our Fairytale Costumes for magical ideas.

Kids love the Kids Purple Dragon Warrior Jumpsuit for a fierce, fantasy-hero look.

7. Wizard Costumes

Wizard outfits are a classic Book Week choice. They are simple, comfortable and easy to recognise.

See our Wizard Costumes for more ideas.

A top choice this Book Week is the Kids Gryffindor Wizard Robe & Tie Set — perfect for Harry Potter fans.

8. Girls Costume Ideas

If you are shopping for girls, there are many great options including princess, fairytale and animal costumes.

Explore our Girls Book Week Costumes collection.

A favourite is the Girls Unicorn Tutu Dress with Wings & Headband — bright, comfy and parade-ready.

9. Boys Costume Ideas

For boys, popular choices include animals, wizards and character costumes.

Browse our Boys Book Week Costumes for more inspiration.

The Kids 12-Piece Police Officer Set is a top role-play pick (includes accessories).

10. Complete Your Look with Accessories

Accessories can make a big difference and help turn a simple outfit into a complete costume.

Take a look at our Book Week Accessories to finish your look.

A top finisher is the Long Blonde Rapunzel Braid Wig — instantly transforms any princess or fairytale outfit.

Final Tips

When choosing a Book Week costume, keep it simple, comfortable and fun. Kids will be wearing it all day, so ease and practicality matter just as much as style.

If you’re still unsure, start with a simple outfit and add accessories to complete the look.

More Book Week reading: Check our guide on when Book Week 2026 starts and the official theme, or browse 50 easy Book Week costume ideas for quick last-minute picks.