14 Fun & Sweet Girls First Birthday Theme Ideas
Your little one’s first birthday is almost here, and you’re looking for a theme that’s just as special as she is. Whether you’re thinking of a boho paradise or a pastel princess get-together, these girls’ first birthday themes are filled with the best ideas.
Discover some of our most-loved and trending first birthday party ideas for girls, along with tips on how to choose the right theme — and plenty of gorgeous matching invites to get you inspired.
How to Choose the Perfect Girls First Birthday Theme
The first birthday party is a big one, so we know how important it is that you feel like you have everything prepared. Here’s how to find the perfect theme, 1st birthday decor, party favors and more to make the party planning process that much easier.
Be Inspired By Your Favorites
Your little darling is just turning one, and while she might have some interests already it’s likely that you’ll take the lead when it comes to deciding on a theme you love. Take inspiration from themes, styles, color palettes, and ideas that resonate with you the most.
Popular trends that work well as girls’ first birthday themes include “one happy camper” boho parties with plenty of greenery, a celebration of all things vintage Disney, a summer fiesta, and a bold and bright “first trip around the sun” party.
Make It Food-Themed
An easy first birthday party theme is food! All babies love it, and there are so many different food groups or specific foods you can theme an entire celebration around.
We love the idea of a watermelon-themed party, but other fruits work just as well. Strawberries, apples, and oranges (for a Little Cuties party) are also fun. You could also choose sweet treats instead, and host a party themed around donuts, cupcakes, or ice cream with a delicious centerpiece.
Take Inspiration From the Season
They’ll have experienced all four seasons in their first year, so you can either be inspired by their favorite season or the one that their birthday takes place in. The seasons make such a great themed first birthday party idea.
Celebrate your new one year old in the winter with a party filled with snowflakes and ice castles, or a summer baby with a picnic on the beach. In spring, take inspiration from the gorgeous blooms around you, and for fall babies we love the idea of a pumpkin themed birthday party.
Try a Play on Words
Playing with words is such a fun way to add even more lightness and joy to your child’s first birthday party. You can use these phrases on invites or party banners, or even theme the entire party around them.
Some of our favorites include “winter one-derland,” “wild one,” “the big one,” and “first rodeo.” Swap “Alice in Wonderland” for “Alice in One-derland.” You can also make up your own fun phrases to match your girl’s first birthday theme.
14 Adorable Girls First Birthday Theme Ideas
There are so many wonderful party ideas and first birthday party themes, but to save you time we’ve compiled a list of our favorites. Explore these party ideas to find the ideal one for your little girl’s special day.
For each girls’ first birthday theme, we’ve also included a matching 1st birthday party invitation. Our digital invitations are not only cute but affordable and easy to customize — so you can play around with the layout, fonts, colors, and more to create a bespoke-feel invite in no time at all.
1. Princess Birthday Party

Design: Signature Greenvelope
Matching invite: Princess Carriage Invitation
Invite your closest friends and your little one’s pals over for a fairytale storybook adventure with a princess themed party. Encourage the young ones to dress up, put on a magical playlist, and serve up a birthday cake with a personalized princess topper.
2. Mermaid Birthday Party

Design: Aline Monda
Matching invite: Sweet Mermaid Invitation
For an adorable 1st birthday theme, head into the ocean and host a mermaid themed birthday party. Decorate your party space with streamers and balloons, life-sized mermaid cutouts, and plenty of under-the-sea themed party games for the little ones.
3. Rainbow Birthday Party

Design: Loree Mayer Design
Matching invite: Boho Rainbow Invitation
Go big and bold with a rainbow theme for baby’s first birthday. Hang up a rainbow balloon garland, use rainbow themed invites, and encourage your guests to show up in their brightest party attire.
4. Ballerina Birthday Party

Design: Claudia Owen
Matching invite: Beautiful Ballerina Invitation
If you have a love for ballet or your little girl has shown an interest in dance, this is a lovely way to celebrate the big one. Look for ballet-themed party decorations, party favors, and table decorations, and use a color palette of soft pastel pink throughout.
5. Wild One Birthday Party

Design: frau brandt
Matching invite: First Safari Invitation
Invite your loved ones to a 1st birthday party with a wild side by choosing a safari animal theme. This “wild one” celebration is a fun take that allows you to celebrate the playful side of your little girl’s life, alongside an adorable animal theme.
6. Bee Birthday Birthday Party

Design: Claudia Owen
Matching invite: Bee Our Guest Invitation
Can you “bee-lieve” how cute she is? Be inspired by these warm, fuzzy friends and host a bday bash themed around the humble bumblebee. Put together a yellow and black themed party, complete with a balloon arch, party decorations, and a matching party invite.
7. Birthday Tea Party

Design: Lissa Anglin
Matching invite: Arched Greenery Invitation
Who says you’re too small for a tea party? Prepare a delicious afternoon tea for the birthday girl and her closest friends, complete with mini sandwiches, cupcakes, and a smash cake with her name on it.
8. Woodland Animals Birthday Party

Design: frau brandt
Matching invite: Woodland Animals Invitation
Be inspired by all things woodland with this girls’ first birthday theme. From elegant deer to adorable bunnies, this popular theme makes finding party supplies easy and leaves a lasting impression on guests.
9. Donut Birthday Party

Design: Lissa Anglin
Matching invite: Donut Party Invitation
Invite your loved ones over to a pastel paradise filled with all things donut. This “sweet one” birthday party idea brings together the deliciousness of donuts (and their very-handy “o” for “one” shape) and a cute color palette to celebrate your baby girl’s birthday.
10. Fruit Themed Birthday Party

Design: Loree Mayer Design
Matching invite: One in a Melon Invitation
Fruit themed parties are always a hit for kids’ birthday parties, and you can choose from fruits like watermelon all the way through to an adorable “berry first” birthday party theme. Add to the sweetness with matching party decor and invites.
11. Space-Themed Birthday Party

Design: Stellax Creative
Matching invite: Space Gems Invitation
We love the idea of hosting a space theme birthday party for your little girl! Put your own sweet pastel twist on the solar system, or stick with bold, bright colors for a planet-and-stars party. Create your own party world with balloons, streamers, colorful lights, and matching party games.
12. Unicorn Birthday Party

Design: frau brandt
Matching invite: Rainbows and Unicorns Invitation
Unicorns have been a kids’ birthday trend for years and we don’t see it stopping any time soon. The great thing about this is that there are unicorn party supplies everywhere, so you’re never far from an on-theme party banner, party invitation, or birthday cake.
13. Fairy Birthday Party

Design: Paper Raven Co.
Matching invite: Happy Toadstools Invitation
Create your very own magical valley straight out of a story book by hosting a fairy first themed birthday party. Stick with a traditional look, or take inspiration from contemporary illustrations and movies that your little one loves.
14. Bunny Birthday Party

Design: itsibelli
Matching invite: Little Bunny Invitation
Last but definitely not least, we have this charming little bunny theme. Who doesn’t love bunnies? Serve up a birthday cake shaped like a rabbit, hand out matching party favors, and dress the guest of honor up in their very own bunny-inspired outfit for photos.
Celebrate the Big Moment With These Girls’ First Birthday Theme Ideas
There are endless first birthday party ideas out there, but we’ve put together this list to bring you our top favorites and trending ideas for girls. Explore these ideas and their matching invites to find the perfect theme for your little wonder.
Once you’re happy with your theme, look for a party invitation that captures the spirit and joy of your big event. Discover our best kids’ birthday party invites and choose one that will put a big smile on your guests’ faces as they open up their inbox.