Recent Reviews

Crazy happy!

By: anmannasalo on 23 February 2017

Very elaborate print on the jumpsuit. Quite clever velcro-attached printed foam pads for shoulder, arm, hand & leg robot parts, which endure kids play. It runs a bit small in size. My boy is 6.5 years old and the 10-12 size we bought for him suited it him fine, since he wore pyjamas on the inside (winter in Greece in February), so I think, he will wear it next year as well, but no more. The only poor thing I could say, was the plain grey back side, compared to the elaborate front. I received it in Greece from Australia, so I should have expected delivery a week ahead of time of placed order. On the whole you made a 6-year old boy crazy happy, so thank you very much CostumeCrazy! Anna Saloura

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Very satisfied

By: girlrules42590907091 on 12 September 2016

Very fast delivery, very satisfied with the quality and the price. Would definitely recommend this to others.

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LoVe, LoVe Stay-Puft Marshmallow Man

By: 214537549652 on 27 August 2015

We absolutely love this costume! Looks amazing on and got great laughs from everyone that saw it. Little fan works beautifully to inflate it and it puffs up super quickly. Excellent purchase!

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Kids Costumes in Sydney

Shopping for kids costumes in Sydney? Costume Crazy stocks one of Australia's biggest ranges of children's dress-ups — from Book Week classics and Halloween favourites to birthday party themes and everyday imagination play.

We're a Sydney-based family business and we've been helping Aussie parents kit out their kids for the big occasions for years. Free shipping Australia-wide on every order, with most kids costumes shipping same or next business day.

Shop kids costumes by age

Toddler Costumes — soft, safe and seriously cute first costumes
Boys Costumes — superheroes, soldiers, sports stars and more
Girls Costumes — princesses, fairies, pop stars and warriors
Tween Costumes — for kids who want something a bit more grown-up
Baby & Infant Costumes — the cutest first dress-ups

Shop by occasion

Book Week costumes. Australia's biggest annual school dress-up. We stock characters from every major children's book series — from Harry Potter and Where's Wally to The Cat in the Hat, Alice in Wonderland and the latest CBCA shortlist favourites.

Halloween costumes for kids. Spooky-but-friendly options for trick-or-treating and Halloween parties. Witches, vampires, ghosts, pumpkins, zombies, skeletons — kid-appropriate scary, plus heaps of cute alternatives for the youngest.

Birthday party costumes. Whether the theme is superheroes, princesses, pirates, dinosaurs, jungle animals or video game characters — we've got the dress-ups for the birthday kid and all their guests.

School plays and concerts. Historical costumes, nativity outfits, animal costumes, professions, country-themed dress-ups and more.

Imagination and everyday play. Some kids just love dressing up. We stock loads of costumes designed for repeated wear — durable enough for daily play, comfortable enough that kids won't take them off.

Popular kids costume themes

Superheroes. Spider-Man, Batman, Wonder Woman, Captain America, Hulk, Thor, Black Panther, Flash — officially licensed Marvel and DC costumes for the next generation of caped crusaders.

Disney & Princesses. Elsa, Anna, Belle, Cinderella, Ariel, Moana, Rapunzel, Jasmine — plus Disney movie characters from Toy Story, Frozen, Encanto, Finding Nemo and more.

Star Wars. Jedi robes, Stormtrooper outfits, Darth Vader, Yoda, Mandalorian, Rey, Kylo Ren — for fans young and old.

Harry Potter. House robes (Gryffindor, Slytherin, Ravenclaw, Hufflepuff), Dumbledore, Hermione, character costumes and accessories like wands and ties.

Animals & dinosaurs. Lions, tigers, giraffes, T-Rex, Triceratops, sharks, sloths — for animal-themed parties, school plays or just fun dress-ups.

Career and profession costumes. Doctors, firefighters, police officers, pilots, chefs, scientists — perfect for school "what I want to be" days and roleplay.

Why parents in Sydney choose Costume Crazy

Free shipping Australia-wide. Sydney delivery in 1-3 business days, no minimum order.
Sized for Australian kids. Clear sizing guides on every product so the costume actually fits.
Family-run, Aussie-owned. Real people on the other end of the phone or email when you need help.
Massive range. Thousands of kids costumes in stock — including character costumes you won't find at other shops.
Afterpay available. Buy now, pay later at checkout.
Easy returns. If it doesn't fit, send it back. We'll sort you out.

FAQ — kids costumes in Sydney

How do I work out the right size?
Each product page has a size chart. Costumes are usually sized by age (e.g. 3-4, 5-6, 7-8) but check the chest, waist and length measurements where available — kids run different sizes. If you're between sizes, size up.

How fast is delivery to Sydney?
Most orders ship same or next business day from our Sydney warehouse. Standard Sydney delivery is 1-3 business days, with express options available at checkout for tighter deadlines.

Do you stock Book Week costumes year-round?
Yes. Book Week is in August in Australia, but we hold Book Week stock all year. We start adding character costumes for the current year's CBCA theme from around April-May.

Can I return a costume if it doesn't fit?
Yes — get in touch and we'll arrange the return. We'll need the costume back unworn with all original packaging.

What if I need a kids costume in a hurry?
Order with express shipping at checkout — most express orders arrive in Sydney within 1-2 business days. If the deadline's really tight, get in touch and we'll do what we can.

Are the costumes good quality for repeated wear?
We stock a range of quality tiers. For one-off events, our budget options are great value. For costumes that'll get loved and worn over and over, look for our premium range — the materials and stitching hold up properly to daily kid wear.