Planning a special celebration for your little lady’s big milestone? These 35 first birthday themes for girls are sweet, fun, and full of joy — perfect for creating a day filled with love, laughter, and adorable memories.
35 First Birthday Theme Ideas for Girls That Are Sweet, Fun, and Full of Joy in 2025
In 2025, first birthday parties for girls are all about capturing the wonder of the moment with themes that are adorable, joyful, and picture-perfect. From whimsical fairytales to modern boho chic, the right theme sets the tone for a celebration filled with laughter, love, and unforgettable memories.
Whether you’re keeping it intimate or going all out, these 21 first birthday theme ideas for girls will inspire a day that’s as magical and meaningful as her very first milestone.
1. Little Wildflower Turns One
Soft pastels, blooming details, and a garden party feel that’s nothing short of magical — this setup by @partypopevents feels like springtime come to life. With blush pinks, butter yellow, and lavender balloons climbing like vines around a floral backdrop, it’s a sweet celebration of one very loved little girl.
From the dainty arch to the dreamy balloon garlands bursting with blooms, every corner feels joyful and light. And that oversized “1”? The perfect reminder that this is just the beginning of her beautiful story.
A wildflower theme never looked so sweet.
2. Grace in Bloom
There’s something so tender about this moment. Blush balloons, sculptural arches, and the gentlest cascade of blooms and butterflies — @thesimpleluxeevents weaves softness and spirit into every inch.
The tonal palette whispers grace, while that delicate cross stands quietly at the heart of it all. It’s elegant. Intentional. And entirely at peace.
For Shanelle’s special day, it’s not just a celebration — it’s a beautiful beginning, dressed in petals and prayer.
3. Pretty in Pink for the Big One
Sugar, bows, and birthday glow — this precious setup by @araceliballoondecor_ is a little girl’s first party dream come true. Soft blush balloons swirl into a bow-tied cascade, wrapping the backdrop like a present waiting to be unwrapped.
The oversized “1” lights up with charm, while the “Happy Birthday” script feels as sweet and simple as the day itself. It’s soft. It’s girly. And it’s just the right amount of magic for her very first celebration.
Cue the smiles — she’s officially ONE.
4. Daisy Dreams & Butterfly Wings
Some first birthdays sparkle — and this one glows. @valana_event created a candy-colored wonderland for Diora’s big day, with layers of blush balloons, glowing butterflies, and oversized daisies blooming right off the backdrop.
The arched panels bring softness, while that illuminated “1” feels like a little spotlight on the star of the show. Add in that pink-and-purple lighting? Pure magic.
A fairy garden fantasy — made just for one very lucky birthday girl.
5. Wild & One
Pink balloons, golden bubbles, and the cutest safari friends in town — @partybangsg brought the wild to Allysa’s first birthday in the most charming way.
With a soft blush palette, sweet sun detail, and happy little jungle animals welcoming guests, this setup feels like a storybook scene come to life. And that oversized “1”? The perfect photo op for a girl who’s just getting started on her biggest adventure yet.
One year down, forever to explore.
6. Down the Rabbit Hole She Turns One
It’s a topsy-turvy tea party and the birthday girl is the guest of honor. @partypopevents brings Alice in ONEderland to life with playing-card balloons, teacups, and a trail of signs that practically whisper “curiouser and curiouser.”
The oversized “1” sets the stage, but it’s the details that steal the scene — a pink toadstool, gold key, checkerboard accents, and that dreamy pastel arch framing the door like a portal to whimsy.
For one magical year, and many mad adventures to come.
7. Bows, Blooms & Baby’s Big Moment
Soft light, silk ribbon, and florals that tumble like a fairytale — @the.event.styler creates a first birthday scene that feels part celebration, part couture showcase.
A sculptural “ONE” anchors the design, while blush and ivory blooms pour from the base of a towering cake like petals on a breeze. The satin bow? The sweetest finishing touch.
It’s elegant, enchanting, and made for a girl whose first year deserves nothing less than pure beauty.
8. A ‘Fairy’ First to Remember
If ever a moment fluttered in on gossamer wings, this would be it. @ballonier_dxb brought pure enchantment to Sofia’s first birthday with a setup that feels straight from a woodland dream.
Soft taupe and blush balloons bloom beneath golden butterflies and translucent wings, while sprigs of greenery and baby’s breath peek through like forest magic. And that cake? As delicate as a whisper, perched perfectly beside her name in sparkling script.
One year in, and already completely spellbinding.
9. Silina’s Sweetest Storybook
Once upon a pastel — @ballonier_dxb turned a little girl’s dream into a whimsical wonderland. With soft balloon clouds, fluttering butterflies, and the coziest fairy cottage you ever did see, this birthday setup feels lifted from the pages of a storybook.
Delicate blooms line the table, mushroom-topped favor boxes await curious guests, and a wide-eyed fairy leads the way into Silina’s enchanted celebration.
Because every fairytale starts with magic — and turns one into forever.
10. Girls Just Wanna Be ONE
Pink, gold, and a whole lot of sparkle — @popdroppartyil turned this rustic space into a glam dream for one very fabulous first birthday girl.
From the oversized balloon bow to the cheeky “Girls just wanna be ONE” backdrop, this party nails playful meets polished. Bubble centerpieces and blush tableware bring the theme to every table, and the glow from those twinkle lights? Pure birthday magic.
Big style, tiny queen.
11. Melanie in Onederland
If you’re dreaming up something wonderful and storybook-sweet, take a peek at this balloonsbysb setup. It’s a full-on “Melanie in Onederland” moment, and I can’t stop swooning over the oversized character panels and vibrant tea party details.
The bold color palette—bubblegum pink, lavender, and Alice blue—feels like a playful twist on classic fairytale styling. And those stacked teacup tables? Total charm overload.
I’d use this for a first birthday or even a themed baby shower that’s all about imagination and magic.
12. Liana’s Sweet One
If soft blush tones are your vibe, this setup by itstoddletime might just steal your heart. The pastel bunny illustration holding balloon strings is the sweetest touch—and those floating butterflies? Pure magic.
I love how the metallic gold balloons add just enough shimmer to elevate the dreamy pink palette without overpowering the softness. It’s like a garden fairytale spun into a birthday celebration.
Wouldn’t this be perfect for a backyard first birthday or a spring baby shower? So gentle, so joyful.
13. Spin Into One
This carnival carousel setup from riverashbakery is the kind of first birthday dream I’d absolutely save to my inspo board. There’s something so storybook-sweet about those hand-painted bunnies floating alongside balloons.
And that table! The sparkly sequin overlay paired with a soft pink tulle skirt is sophisticated perfection. I love how the glowing marquee “ONE” sign anchors the whole spread with a little touch of magic.
If you’re thinking fairytale meets festive, this theme totally delivers.
14. Emily’s Ballet Bash
Okay, can we take a moment for this precious ballerina birthday setup from momentsby_osp? The giant bows, the soft pink palette, and those adorable tutu-clad cutouts—it’s a sugar-sweet fantasy come to life.
I’d totally use this as inspo for a first birthday or ballet-themed shower. Just imagine little guests twirling around while dainty desserts wait nearby on cake stands and ribbon-wrapped vases.
Everything about this feels like the opening scene to a storybook.
15. Anaya’s Fairytale One
Here’s an idea that fluttered right into my heart—this dreamy butterfly-themed first birthday from fashion_florist_2000 is pastel magic with a little sparkle on top.
From the lavender and blush balloons to the metallic butterflies peeking out like they’re mid-flight, everything feels so soft and storybook sweet. I’d definitely suggest to borrow this look if you’re going for something playful but still polished.
And that oversized “ONE” sign? It totally steals the show without overwhelming the setup.
16. Diya’s Dazzling Debut
This bold and bubbly pink stage, crowned with gold stars and glittery touches, gave me serious princess party inspo. I’m obsessed with how they layered different textures—like glossy mylar, tufted fabrics, and soft pastel balloons—to make it feel rich without being too over-the-top.
If you’re dreaming of a first birthday setup that feels fit for a tiny queen, let kriyativemindz show you how it’s done.
The marquee letters spelling out her name? Absolutely stole the spotlight.
17. Sunset ONE
I spotted this warm, peachy dream by thesimpleluxeevents and instantly imagined the sweetest summer soirée under a sherbet sky.
The draped canopy alone feels like a luxury cabana moment, and that layered arch backdrop? A literal golden hour glow in party form. I love how they mixed matte neutrals with soft citrus tones—it gives just the right dose of desert fancy without leaning too rustic.
It’s like a sunset and a birthday had a baby, and the result was magic.
18. Pixie Hollow Turns ONE
As soon as I saw this setup from mylittlepartydecoration, I felt like I stumbled straight into Pixie Hollow. Every detail is bursting with that wonderful forest magic—glimmering greens, soft fairy lights, and tree stump pedestals that feel like they were borrowed from Tinker Bell’s own garden.
I’m especially obsessed with the way they layered those shimmering balloons in pearly pink and mossy green—it creates such an enchanted canopy effect.
It’s playful, it’s magical, and honestly? It totally makes me want to throw a fairy party just because.
19. Berry Much ONEderful
I came across this berry-sweet setup and had to share—because how adorable is a “Berry First Birthday”? The balloon garland in juicy reds, cotton candy pinks, and minty greens instantly reminded me of a strawberry patch in full bloom. And those little faux berries nestled into the greenery? Chef’s kiss.
What really made me smile was that oversized strawberry cutout—it adds such a playful, whimsical vibe, especially paired with the dainty white daisies and that perfectly simple cake.
If you’re dreaming of something vibrant, fresh, and full of fruity charm, this theme by picnicperfectorlando is a total winner.
20. Hailey’s Bow-tiful First Birthday
If you’re a fan of Minnie Mouse and all things pink, this bow-tastic birthday idea is just too cute not to share. I spotted this setup and instantly pictured it lighting up a little one’s face—it’s bubbly, bold, and full of charm.
The backdrop of soft pink roses sets such a lush stage, and the way the balloon garland wraps around the space like a candy-colored cloud? Adorable. Plus, those metallic Minnie ears tucked into the balloons give it that perfect sparkle.
This idea by delloons is playful, polished, and totally picture-ready for a one-year-old star.
21. One Peachy Year
I couldn’t get over how sweet this “One Sweet Peach” theme turned out—it’s soft, cheerful, and full of charm. The peach-shaped cake was the highlight for me, and it tied the whole dessert table together with the cutest touch.
Everything from the macarons to the balloon arch felt playful yet pulled-together—just how I like it.
I’d totally use this for a summer first birthday or a garden party with fresh, fruity vibes.
22. One Magical Year
I came across this setup and immediately thought — fairy garden meets winter magic. The lavender and silvery blues feel so soft and otherworldly, like something out of a bedtime story.
I love how the sheer draping adds that delicate, floaty touch. And those crystal cake stands? They catch the light in the prettiest way.
If you’re dreaming up a first birthday that feels sweet, sparkly, and a little enchanted, this look from thepaperflowerhouse is such a lovely place to start.
23. Niboli’s Berry First Bash
How sweet is this strawberry dream setup? I saw this and instantly pictured a warm afternoon, berry treats in hand, and a little one giggling nearby. The green and pink balloon garlands feel fresh and juicy — totally giving garden party vibes.
And that giant cut-out strawberry? So playful! It’s the kind of detail that makes the whole space feel like a page out of a storybook.
If you’re leaning into a fruity, cheerful theme for a first birthday, dreamstothms really nailed the look.
24. Hopping into ONE
This bunny-themed setup made me stop scrolling. The sunshine-y balloon arch in soft yellows and peachy pinks? Pure joy. And I love that bunny cake with sleepy eyes and paper ears — it’s too precious.
The little welcome sign saying “Our little bunny Elisha turns ONE” is such a sweet personal touch. It all feels cozy and playful, like a spring morning in storybook land.
A perfect pick if you want something simple, sweet, and full of heart. openplayhouse captured the moment so well.
25. First Fairy Flutter
If you’ve been dreaming of a soft, fairy-inspired theme, this one by balloonsbycaitie feels like a gentle breeze on a warm spring day.
I’m completely enchanted by this fairy-first-birthday setup — the oversized pastel blooms, soft blush balloons, and that delicate butterfly wing all feel so fresh and sweet.
What really gets me is how everything flows so effortlessly — from the blush and ivory balloon cascade to the patch of green “moss” under the flowers. It’s magical without being over-the-top.
26. Glittering First
I saw this royal setup and immediately thought—this is how you celebrate a little queen turning one! The glittery crowns, soft pinks, and that ornate high chair all scream fairytale vibes in the best way.
That towering cake with the crown topper was definitely the showstopper for me.
If you’re going for something glamorous, girly, and absolutely unforgettable, this princess theme delivers every single detail with sparkle.
27. Bowtiful One
This Minnie-themed moment? So darling. I stumbled across it and couldn’t stop smiling. Between the oversized bows, glowing marquee “1”, and that polka dot rug, it’s just the right mix of playful and precious.
The layered pinks, from blush to fuchsia, create such a happy energy — and those little Minnie cutouts? Absolutely adorable.
If you’re planning a sweet first birthday and want something that pops but still feels cozy and cute, this setup from lovevents_by_ny totally nails it.
28. First Lavender Glow
I came across this lavender and gold setup and instantly thought — elegant, but still so warm and festive. The way the arch wraps around the “Happy Birthday” sign creates a perfect little spotlight moment, and that soft purple tulle? So dreamy.
Such a pretty option if you’re into a more refined birthday palette with a magical twist. Shared by balloon_decoration_eventplaner.
I love how the space itself adds to the charm, too — the natural light, the plants, the arches. It feels like a celebration tucked inside a little garden room.
29. Unicorn Dreams
I’ve always been a sucker for pastel rainbows and unicorns, so this setup had me absolutely enchanted. The dreamy background, glittery stars, and that smiling unicorn cake created such a fancy world—it felt like stepping into a fairytale.
It’s the kind of theme I’d choose when I want pure joy to light up the room.
Perfect for a magical first birthday, this setup brings sparkle, softness, and a whole lot of fun.
30. One in Flight
Spotted from glimmer_decora, this setup completely stole my heart. The lavender, gold, and soft white balloons are like a little sunset sky, with pops of pastel wings leading you into a storybook moment.
And those oversized butterfly cutouts? So sweet and playful. It almost feels like I’m stepping into a magical meadow made just for little ones.
A lovely outdoor idea if you’re dreaming of something light, enchanting, and full of wonder.
31. Deep Blue One
How adorable is this pastel under-the-sea setup? I came across it and instantly imagined a soft ocean breeze and tiny giggles floating through the air. The gentle dolphins and baby diver add a storybook vibe that’s perfect for a first birthday.
I love how audrey.k_events used dreamy blues, lilacs, and seashell accents to keep things calm but magical. It’s like an underwater daydream — without getting your feet wet.
Perfect if you want something sweet, serene, and extra special for your little explorer.
32. Martha’s Fairy First
If you’ve ever dreamed of throwing a fairy tale party, this setup by luft_balloons is pure magic. The moment I saw those pastel balloon towers and that little mushroom cottage, I thought — this is the stuff of childhood wonder.
There’s something so soft and nostalgic about the blend of lavender, blush, and buttercream yellow. And those delicate butterflies? I’m in Love with them.
Ideal for a little one who’s always surrounded by love, giggles, and a bit of sparkle.
33. Ella’s Cheeky Bunny
This one melted me the moment I saw it — the softest little setup for baby Ella, styled by happypartyco. It’s like walking into a pastel hug.
Everything feels calm and airy: the creamy lavender and lemon-yellow balloons, the sweet plush bunnies peeking from the shelf, even the cake with its simple purple tassel. It’s minimal, but magical.
If you’re leaning into quiet charm for your little one’s first, I suggest, this is perfect for a gentle celebration that still feels full of joy.
34. Hop & Play
If you’ve ever dreamed of a baby party that feels like it popped out of a storybook — this brightmoonsoftplay setup is it.
The plush bunnies, pastel play blocks, and tiny teepee bring Peter Rabbit to life in the most magical way. I love how everything’s tucked into a soft play space, making it just as sweet for the little ones as it is picture-perfect for us grown-ups.
It’s gentle and full of hop-along charm. Honestly, I kind of want this for my next picnic.
35. Color Pop Bash
I came across this artixiali party setup and couldn’t help but grin — it’s like walking into a cartoon come to life.
The characters feel like they jumped straight out of a TV screen to throw a dance party, and those balloon towers? Literal bursts of sunshine. I love how every detail feels playful, unexpected, and completely kid-approved.
If joy had a color palette, it would be this.
