Kids Costumes for 3 Big School Events
Kids costumes sit at the centre of three big Australian school events, plus year-round parties and dress-up days:
- Book Week 2026 — 22–28 August (CBCA dates). Storybook character costumes: Alice in Wonderland cluster (Alice + Queen of Hearts + Mad Hatter + Cheshire Cat), Where's Wally Waldo, Matilda, Cat in the Hat, Harry Potter / Hermione, BFG + Sophie, The Gruffalo + Gruffalo's Child + Gruffalo's Mouse, Willy Wonka kids, Hungry Caterpillar, Captain Underpants, David Walliams range.
- 100 Days of School — late June to early August (depending on state). Classic "100-year-old" dress-up: grey wig, cardigan, walking stick, glasses on chain.
- Halloween 2026 — Saturday 31 October. Kids Halloween: vampire, witch, skeleton, ghost, pumpkin, Wednesday Addams, Wonder Woman, Pennywise (older kids).
- Birthday parties — superhero, princess, dinosaur, unicorn, mermaid theme parties.
Kids Costumes by Age — Toddler, Boy, Girl & Teen
- Toddler costumes (sizes 1–4) — soft fabrics, Velcro fastenings, comfortable for all-day wear. Popular: dinosaur onesie (Pink Dinosaur Onesie), Hungry Caterpillar (toddler + child), Toddler Olaf Snowman, mini Wiggles 30th Anniversary toddler (Anthony / Lachy / Simon), Captain Feathersword set.
- Boys costumes (sizes 4–14) — Spider-Man, Captain America, Iron Man, Hulk, Wonder Woman + DC heroes, Where's Wally accessories, Harry Potter / Hogwarts Robe (Boys), pirate, ninja, dinosaur, Minion Dave, Mario / Luigi kids, Captain Underpants, David Walliams range (Billionaire Boy, Grandpa's Great Escape).
- Girls costumes (sizes 4–14) — Elsa Frozen 2 Deluxe + Prologue, Disney princess (Cinderella, Belle, Aurora, Snow White, Ariel, Moana), Wednesday Addams (Girls Dress + Wig), Hermione + Hogwarts accessories, Tinkerbell, Matilda, Princess Peach kids, Encanto Mirabel + Isabella, KPop Demon Hunters Rumi / Mira / Zoey, Veruca Salt.
- Teen costumes (sizes 12–16) — bridging kids and adult ranges. Wednesday Addams, KPop Demon Hunters trio, Eleven Mall Dress (Stranger Things teen + adult), Harley Quinn, anime cosplay (Goku, Sailor Moon).
2026 Trending Kids Costumes
Newest pop culture costumes for 2026 school events and Halloween:
- KPop Demon Hunters (Netflix 2025) — Kids Rumi (jacket + shorts), Kids Mira (top + pants), Kids Zoey (dance costume) + matching wig. Kids sizes only.
- Wednesday (Netflix) — Wednesday Addams Girls Dress Wig Accessories (Nevermore Academy schoolgirl look + braided pigtails).
- Beetlejuice (Beetlejuice Beetlejuice 2024) — Mr Beetlejuice (mens) + Mrs Beetlejuice — for older kids / teen crossover.
- Stranger Things — Eleven Mall Dress (child / teen) + Eleven Blonde Wig.
Popular Kids Costume Categories
- Superhero — Spider-Man, Captain America, Iron Man, Hulk, Batman, Wonder Woman, Deadpool (older kids)
- Disney Princess — Elsa Frozen 2 (Deluxe + Prologue), Anna, Cinderella, Belle, Sleeping Beauty Aurora, Snow White, Ariel, Moana, Encanto Mirabel + Isabella, Tinkerbell
- Storybook (Book Week) — Alice in Wonderland cluster (Alice + Queen of Hearts + Mad Hatter + Cheshire Cat), Where's Wally Waldo, Cat in the Hat, Matilda, Harry Potter / Hermione, BFG + Sophie, The Gruffalo + Gruffalo's Child + Gruffalo's Mouse, Willy Wonka kids, Captain Underpants, Hungry Caterpillar, David Walliams range
- Animal & onesie — Pink Dinosaur Onesie, Inflatable Dinosaur, Unicorn Onesie, Lion / Tiger / Bear / Monkey onesies, Cat / Bunny ear sets, Kangaroo + Koala kids (Aussie animals)
- Halloween classics — vampire, witch, zombie, skeleton, ghost, pumpkin, mummy, devil (horns headband + pitchfork)
- Anime / cosplay — Goku Dragon Ball Z, Sailor Moon, Naruto Itachi Uchiha headband, Demon Slayer Rengoku wig, Pokemon Pikachu
- Funny / novelty — Inflatable T-Rex / Jurassic World, Kids Inflatable Sloth, Kids Inflatable Rooster, Hotdog Footy Match Food
- Kids TV characters — Wiggles (Emma 30th Anniversary, Anthony, Lachy, Simon — toddler + kids), Dorothy the Dinosaur, Captain Feathersword
- Historical & cultural — Victorian (Girls Apron Mop Cap + Urchin + Olden Day School Girl), Roman Toga / Greek Goddess, Cleopatra, Mens Medieval Noble Knight, Cowboy Hat kits
Choosing the Right Kids Costume
A few tips from years of selling kids costumes for Australian school events:
- Prioritise comfort + movement — Book Week parades involve walking, sitting and play. Lightweight materials win over elaborate floor-length gowns.
- Velcro > buttons for kids 4–8 (kids can dress themselves).
- Size up if between sizes — easier to wear over t-shirt + leggings, and re-wearable next year.
- Check the size chart on each product page — sizing varies by brand. Compare to a top your child already owns.
- For Book Week — pair the costume with the actual book your child reads at parade.
Kids Costumes FAQ
What's a popular Book Week costume for kids in Australia?
Popular kids Book Week picks: Alice in Wonderland cluster (Alice, Queen of Hearts, Mad Hatter, Cheshire Cat), Where's Wally Waldo Kit, Cat in the Hat, Matilda (Roald Dahl Girls World Book Week + Book Cover variant), Harry Potter / Hermione (with Hogwarts Robe + magical wand), BFG + Sophie, The Gruffalo + Gruffalo's Child + Gruffalo's Mouse, Willy Wonka kids, Captain Underpants, Hungry Caterpillar, David Walliams range (Billionaire Boy, Grandpa's Great Escape). Aussie classics like Possum Magic and Wombat Stew aren't currently stocked.
Do you have costumes for toddlers?
Yes — toddler costumes (sizes 1–4) with soft fabrics and Velcro fastenings, comfortable for all-day wear. Toddler picks: Hungry Caterpillar (toddler + child), Toddler Olaf Snowman, Wiggles 30th Anniversary toddler (Anthony / Lachy / Simon), Captain Feathersword (2-4 yrs +), Pink Dinosaur Onesie. (Our kids range starts at toddler — we don't stock dedicated baby costumes.)
How do I choose the right size for my child?
Kids costume sizing varies by brand. If your child is between sizes, size up — easier to wear over a t-shirt + leggings, and most kids fit it the following year too. Each product page lists exact measurements; compare to a top your child already owns.
Are these costumes suitable for school events?
Yes — kids costumes here use lightweight fabrics, soft Velcro fastenings (so kids can dress themselves), and are cut for active wear so children can run, sit and play through parade day. For toddler sizing, check the product page for specific age guidance.
What are the trending 2026 kids costumes?
For 2026: KPop Demon Hunters kids trio (Rumi jacket+shorts / Mira top+pants / Zoey dance + matching wig), Wednesday Addams Girls Dress Wig Accessories, Eleven Mall Dress (Stranger Things child / teen). Wicked Glinda / Elphaba specific cuts aren't currently stocked.
What's popular for boys vs girls?
Boys: Spider-Man, Adult / Kids Inflatable Dinosaur, Captain America, Iron Man, Mario / Luigi kids, Minion Dave, Where's Wally Waldo Kit, Harry Potter / Boys Hogwarts Robe, Captain Underpants, David Walliams range (Billionaire Boy, Grandpa's Great Escape). Girls: Elsa Frozen 2 (Deluxe + Prologue), Disney princess range (Cinderella, Belle, Aurora, Snow White, Ariel, Moana), Alice in Wonderland cluster (Alice, Queen of Hearts, Mad Hatter, Cheshire Cat), Wednesday Addams Girls Dress, Hermione, Tinkerbell, Matilda, Encanto Mirabel + Isabella, Princess Peach kids, Veruca Salt.
How fast can I get a kids costume delivered?
Same-day Melbourne dispatch on orders placed before 2pm AEDT business days. From there it's Australia Post Express to most metro areas — delivery times depend on Australia Post and aren't guaranteed.
Related Categories
Toddler (1–4) · Boy's Costumes · Girl's Costumes · Teen Costumes · Kids Book Week · Kids Halloween · Kids 100 Days · Kids Superhero · Animal Costumes · Fairytale (Disney Princess)