Planning a child’s birthday party is always exciting, and in 2025 the trends are brighter, more creative, and more personalised than ever. Whether you're celebrating a 1st birthday or a 10th, the right theme brings the whole day to life. To help you plan an unforgettable celebration, we’ve rounded up the Top 10 Kids' Party Themes for 2025 with ideas, styling tips, and links to our Katie J Design and Events personalised decorations. All handmade in Australia and shipped Australia wide, to New Zealand, and the United States.
1. 🦖 Dinosaur Adventures (Always a Roaring Hit!)
Why it’s trending: Dinosaurs continue to capture kids' imaginations, and 2025 is no exception. Think volcano backdrops, dino footprints, and lush greenery.
Must-Have Decorations:
- Personalised Dinosaur Banners
- Dino-themed loot bags and party favours
- Green, orange, and brown balloon garlands
Tip: Add a “Dig Site” sensory activity with sand and plastic dinosaur bones!
2. 🦄 Magical Unicorn Dreams
Why it’s trending: Pastel colours, rainbows, and glittery accents make a Unicorn Party theme perfect for magical celebrations.
Perfect Pairings:
- Unicorn Party Banners and Bunting
- Customisable loot bags with the birthday girl's name
- Unicorn horns as party hats
Idea: Use confetti-filled balloons and a unicorn cake as a show-stopping centrepiece.
3. 🧜 Mermaid Under the Sea
Why it’s trending: This whimsical, water-themed party is ideal for summer birthdays and poolside fun.
Decor Checklist:
- Mermaid Banners & Stickers
- Blue, teal, and purple balloon arches
- Glitter tail cupcake toppers
Activity Idea: “Under the Sea” sensory play or treasure hunt.
4. 🐒 Jungle Safari Adventure
Why it’s trending: Perfect for both boys and girls, jungle parties offer a fun, nature-filled setting that’s great for outdoor play.
Your Go-To Products:
- Jungle Party Theme Decorations
- Customised animal print stickers
- Safari-style photo booth
Bonus Tip: Add jungle animal plushies as party favours.
5. 🎮 Video Game Gaming Party
Why it’s trending: With video games being a huge part of kids’ lives, gaming-themed parties are modern, fun, and full of colour.
Decor Options:
- Controllers, pixel-style fonts, and neon signage
- Gaming lanyards and loot bags
- Black and neon green colour palette
Product Suggestion: A custom “Game On” banner with the child's name and age.
6. 🌈 Rainbow & Pastel Bliss
Why it’s trending: Bright, uplifting and gender-neutral—perfect for younger kids or combined sibling birthdays.
Best-Selling Decorations:
- Rainbow-themed bunting and backdrops
- Multi-colour Loot Bag Labels & Stickers
- Pastel balloon arches
Craft Idea: DIY rainbow wands or pastel slime stations.
7. 👑 Royal Princess Party
Why it’s trending: This timeless classic still reigns! Crowns, castles, and all things regal make every little girl feel like a queen.
Decor Essentials:
- Princess banners with royal accents
- Pink and gold colour palette
- Personalised Party Favours for a luxe touch
Fun Idea: A dress-up corner with princess gowns and tiaras.
8. 🧑🚀 Space & Galaxy Explorers
Why it’s trending: Space-themed parties are educational, adventurous, and perfect for science-loving kids.
Out-of-this-World Ideas:
- Outer Space banners and labels
- “Blast Off” birthday invites
- Moon rock candy and alien slime stations
Add-On: Include a “Mission Control” sign with your child’s name.
9. 🎥 Movie Night or Popcorn Party
Why it’s trending: Ideal for small groups, movie nights are cosy, customisable, and easy to host at home or in a hired cinema.
Event Must-Haves:
- Popcorn-themed loot bags and signs
- Movie themed invitations
- Personalised drink labels
Bonus: Provide pillows, blankets, and “tickets” for a VIP experience.
10. 🚜 Construction & Trucks
Why it’s trending: Toddlers and preschoolers are obsessed with diggers and dump trucks—and this theme delivers loads of fun.
Best Decor Combos:
- Yellow and black hazard tape accents
- “Caution” birthday signs and banners
- Truck-themed cupcake toppers
Interactive Fun: A sandbox digging station with toy trucks.
🎉 How to Make Any Theme Shine
Regardless of your chosen theme, here’s how to elevate your party with ease:
- Personalisation: Kids love seeing their names on banners, stickers, and invites. Shop the full range of customisable decorations here.
- Coordination: Stick to a colour scheme and match your balloons, tableware, and party favours.
- Photos Matter: Plan a decorated photo booth corner for memories that last a lifetime.
🛒 Ready to Plan Your Party?
At Katie J Design and Events, we offer Australia’s largest range of personalised party decorations, made with love and shipped fast. With themes for all occasions, Afterpay options, and high-quality materials, your next celebration is sure to be unforgettable.
🎁 Shop by Theme
🎈 Banners & Bunting
🛍️ Custom Party Favours
📌 Final Tip for Parents
Don't stress! Planning should be fun. Pick your theme, shop your supplies, and let your creativity shine. And remember, we’re here to help every step of the way.
Kids' Party Themes FAQ
What are the most popular kids' party themes for 2025?
Top trends for 2025 include Dinosaurs, Unicorns, Mermaids, Jungle Safari, Gaming, Rainbows, Princess, Space, Movie Night, and Construction themes.
How do I choose the best party theme for my child?
Pick a theme based on your child’s interests, favourite colours, or hobbies. Think about whether the party will be indoors or outdoors, and choose decorations that match your space.
Where can I buy personalised kids' party decorations?
You can shop Australia’s biggest range of personalised party decorations at Katie J Design & Events. We ship Australia wide, to New Zealand, and to the USA.
Are personalised party decorations worth it?
Yes! Custom banners, stickers, labels, and party favours make your event feel special and create amazing photos. Kids love seeing their names on the decorations.
Do you ship kids’ party decorations to the United States and New Zealand?
Yes, we ship our handmade personalised party supplies to the USA and NZ with fast turnaround times.
Customer Service
June 20, 2025
How Exciting! Parties at home are so much fun, and we have some great resources that you can check out, here: https://www.katiejdesignandevents.com.au/blogs/parties-by-katie-j/tagged/party-planning