10 Magical First Birthday Dresses for Baby Girls (with Cake Smash Tips!)

Hannah's Party Ideas Blog

🎂 10 Magical First Birthday Dresses for Baby Girls 


Your baby girl’s first birthday is more than a milestone—it’s a moment of wonder, joy, and unforgettable sparkle. Whether you're planning a dreamy garden party or a cozy cake smash at home, the right outfit sets the tone for the celebration and the photos you'll treasure forever.

Here are 10 enchanting dresses and rompers from Hannah Rose Vintage Boutique that promise to make her big day truly magical—plus tips to make your cake smash as sweet as the frosting.


1. Pink Sugar Sparkle Party Dress

girls sequin party dress in pink

A sequin dream in soft pink, this dress catches the light and hearts alike. Perfect for a glam birthday theme or a twinkle-lit evening celebration.

Cake Smash Tip: Pair with a matching sequin headband and a simple vanilla cake for a cohesive sparkle aesthetic.


2. Posy Petals Dahlia Party Dress

pink birthday party dress

Delicate layers of tulle and floral accents make this pink beauty ideal for garden parties or fairy-tale themes.

Cake Smash Tip: Use fresh flowers or petal confetti around the cake to echo the dress’s floral charm.


3. Lavender Kiss Puff Sleeve Romper

1st birthday cake smash outfit girl

Soft puff sleeves and a gentle lavender hue make this romper a cozy yet elegant choice for indoor celebrations.

Cake Smash Tip: Choose a lavender buttercream cake and a vintage high chair for a timeless photo setup.


4. Buttercream Whimsey Romper

Creamy tones and ruffled details give this romper a vintage feel with modern comfort.

Cake Smash Tip: A naked cake with buttercream swirls complements the outfit beautifully—add a floral crown for extra whimsy.


5. Cherry Fizz Party Dress

Bold hot pink meets playful elegance. This dress is made for the little one who loves to shine.

Cake Smash Tip: Use a bright pink cake with sprinkles or edible glitter to match the energy of this look.


6. Minty Blossoms Party Dress

Spellbound Floral Party Dress in Mint

Fresh mint and floral prints make this dress a breath of spring. It’s perfect for outdoor birthdays or botanical themes.

Cake Smash Tip: Incorporate greenery or eucalyptus in your cake decor to echo the mint tones.


7. Twilight Sugar Plum Romper

Baby girl 1st birthday ideas

Lavender sequins and soft textures make this romper a showstopper for evening parties or dreamy indoor shoots.

Cake Smash Tip: Use twinkle lights and a plum-colored cake for a magical twilight vibe.


8. Pink Tulips Party Dress

Birthday girl outfit 7 years old

Matching Sibling Pink Tulips Party Romper

Birthday cake smash outfit baby girl

Swiss dot fabric and tulip-inspired design bring a soft, storybook feel to this dress.

Cake Smash Tip: Decorate with tulip-shaped cookies or pastel balloons to match the dress’s gentle charm.


9. Apricot Daydream Baby Girl Romper

Enchanted Floral Baby Girl Romper in Apricot

Warm apricot tones and floral prints make this romper ideal for autumn birthdays or rustic themes.

Cake Smash Tip: Use a carrot cake or apricot jam-filled sponge for a seasonal touch.


10. Bluebell Garden Party Dress

Spellbound Floral Party Dress in Powder Blue

Powder blue and floral elegance combine in this dress that feels like a stroll through a storybook meadow.

Cake Smash Tip: Add blue hydrangeas or a watercolor cake design to bring out the dress’s garden magic.


🧁 Final Tip: Keep It Playful

Let her explore, squish, and smear that cake with joy. Choose outfits that are comfortable, photogenic, and easy to clean—or keep a backup for post-smash cuddles.


Whether you choose sequins, florals, or soft pastels, each piece from Hannah Rose Vintage Boutique is designed to celebrate her first year with beauty, comfort, and a touch of magic. Explore the full Birthday Outfits collection to find the perfect look for her big day.

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