What's in the Box

Long yellow A-line dress with white collar and sleeve trim
Black and white striped athletic socks
Inflatable football

This Kids Boy in the Dress Costume brings David Walliams' beloved character Dennis to life — bright yellow dress with vintage school-uniform styling, football socks, and an inflatable ball that captures the book's heart-warming message about being yourself.

The dress is cheerful retro yellow with a crisp white pointed collar and matching cuff trim, elasticated waist for easy wear, and a pleated skirt that swishes when they move. Comes with classic black-and-white striped sports socks and a blow-up football — perfect for re-creating Dennis's dual love of fashion and footie.

Perfect For

Book Week & World Book Day: A standout pick for David Walliams parades, literary character dress-up days, or any Book Week event celebrating stories about individuality and breaking stereotypes.

School Character Parades: Ideal for 100 days of school celebrations, anti-bullying week themed days, or any school event focused on kindness and acceptance — the book's core themes resonate year-round.

David Walliams Fans: If your child loves Walliams' books (Gangsta Granny, Demon Dentist, Mr Stink), this costume lets them step into one of his most iconic stories with a character they'll recognise instantly.

How to Wear It

Pair with black school shoes or trainers (not included) to complete Dennis's look. Blow up the football just before heading out — it's lightweight enough to carry all day without weighing them down. A messy fringe or styled hair matches the book's illustrations perfectly.

Parent FAQs

What size should I order?

Check the size chart against your child's chest and height measurements. The elasticated waist gives a bit of flex, so if they're between sizes we'd suggest sizing up for a longer wear and easier movement during active play.

Can they wear this over regular clothes?

The dress slips on easily over a t-shirt and shorts or leggings if the weather's cool, though it's designed to be worn on its own for the authentic look. The elastic waist means no fiddly zips or buttons.

How do I inflate the football? Is it durable?

The football has a standard air valve — blow it up by mouth or use a small hand pump. It's lightweight PVC, perfect for carrying around at school events, though not designed for serious playground kick-abouts.

Will other kids recognise the character?

David Walliams' books are hugely popular in Australian primary schools, and The Boy in the Dress is a modern classic. Most teachers and kids aged 7+ will know Dennis's story — it's a frequent Book Week favourite.

Care: Hand wash the dress in cold water, air dry flat. Wipe the inflatable ball clean with a damp cloth.

Kids Boy in the Dress Costume - David Walliams Book Week Outfit