KPop Demon Hunters Costume Kids Derpy Tiger T-Shirt Pants Mask Book Week Outfit

Description

Bring the KPop Demon Hunters Derpy Tiger to life for Book Week 2026 with a bright, comfortable kids costume set they will actually want to wear all day.

This is the fan-favourite Derpy Tiger look, built around a vividly printed top teamed with either shorts or full-length pants. Depending on the package you choose you can add the soft character mask and the matching carry bag, or switch to the one-piece dress version for kids who prefer a simpler pull-on outfit. There is also a bag-only option if the outfit is already sorted and you just need the finishing prop. Sizes run from 110cm (3-4 years) right through to 160cm (11-12 years), so one costume style covers the whole primary school age range.

Choose Your Derpy Tiger Package

Size Guide

Sizes are labelled by height in centimetres with a suggested age range. Measure your child's height without shoes, then check the chest measurement against a t-shirt that already fits them comfortably. If your child sits between two sizes, take the larger one.

Sizing tip: Australian kids generally measure a little taller than the labelling suggests, so if you are between sizes or your child is due for a growth spurt before August, size up. A slightly roomy costume still photographs well and leaves space for a long-sleeve top underneath on a cold Book Week morning.

Why Parents Choose This KPop Demon Hunters Costume

• Instantly recognisable - the Derpy Tiger graphic reads clearly from across a school assembly, so nobody has to ask who your child is dressed as.
• Comfortable enough for a full school day - soft, breathable fabric and a stretchy elastic waistband, not a stiff single-use costume that gets abandoned by recess.
• Machine washable - it survives lunch, the playground and the trip home, then goes straight in the wash.
• Nine package options - pay only for the pieces you need, from the complete top, pants and mask set down to the bag on its own.
• Wears well beyond Book Week - the top and pants pass as normal casual clothes, so the cost is spread across pyjama days, birthday parties and school holidays.

Fabric & Care

The set is made from lightweight polyester in a rich blue colourway. The fabric has a soft handfeel with a comfortable degree of stretch, so kids can run, jump and sit cross-legged on the assembly floor without the outfit pulling. The waistband is elastic and easy for children to manage on their own in the school bathroom.

Machine wash cold on a gentle cycle with like colours, then hang to dry away from direct sunlight to keep the printed graphics vivid. Do not tumble dry or iron directly over the print. Please allow a 1-3cm variance in the measurements above, as each piece is measured by hand, and note that screen settings can make colours appear slightly different from the finished garment.

Book Week and Party Styling Ideas

KPop Demon Hunters began life as an animated feature with a companion illustrated storybook and graphic-novel tie-ins, which is exactly what makes it a legitimate Book Week choice rather than a screen-only costume. If your school asks children to name the book behind their outfit, the illustrated companion title gives them a clear answer, and the Derpy Tiger is a distinct, easily described character within it. Pair the costume with a printed copy tucked under the arm for the parade and the brief is comfortably met.

For group costumes, the Derpy Tiger works beautifully alongside friends dressed as other characters from the same story, or as a bold standalone in a wider animal-character group. Add face paint whiskers if the mask gets too warm, finish with plain white sneakers so the outfit stays school-appropriate, and use the carry bag for lunch and a water bottle so your child is not juggling a school backpack and a costume prop at the same time.

Frequently Asked Questions

Is this an official licensed KPop Demon Hunters costume?
No. This is an unofficial, non-licensed costume inspired by the character's styling. It is designed to capture the look at a fraction of licensed pricing.

What is included in each package?
It varies by the option you select at checkout. The packages table above lists exactly what comes in each one, from the full top, pants and mask set through to the bag on its own.

What size should I order for a 7 year old?
Most 7 year olds fit the 130cm or 140cm size. Check your child's height against the size guide and go with the larger option if they are close to the upper end of a range.

Can it be washed?
Yes. Machine wash cold on a gentle cycle and hang to dry. Avoid tumble drying and do not iron over the printed graphics.

Will it arrive in time for Book Week?
Australian Book Week 2026 falls in mid-August. Orders placed now ship from our Australian warehouse and typically arrive within a few business days, but ordering early is always the safest way to guarantee your size is still in stock.

Fast Australian Shipping

We ship Australia-wide from our local warehouse, with fast delivery to Sydney, Melbourne, Brisbane, Perth, Adelaide, Hobart, Canberra and Darwin, plus regional and remote addresses. Orders are dispatched quickly so your costume is hanging in the wardrobe well before the Book Week parade rather than arriving the night before.

This is an unofficial, non-licensed costume inspired by popular characters. Lets Party is not affiliated with, licensed by, sponsored by or endorsed by Sony Pictures Animation, Netflix, or any other rights holder of KPop Demon Hunters. All character names are used descriptively to help customers identify the style of costume.