Special Occasions

Birthday Outfits for Boys & Girls

Celebrate their big day in classic Cecil & Lou style with birthday outfits for boys and girls. Shop smocked bubbles, birthday dresses, diaper sets, short sets, pajamas, rompers, and other coordinated styles featuring cakes, balloons, crowns, embroidery, appliqué, and playful party details.

From first birthdays to celebrations for bigger kids, find sweet outfits for birthday parties, milestone photos, family gatherings, and sibling coordination. Select styles may also offer personalization or monogramming for an extra-special birthday look.

  • Blue Stripe Smocked Birthday Bubble Young boy wearing a light blue outfit with embroidered designs outdoors.

    Blue Stripe Smocked Birthday Bubble

    $43.00
    $43.00 $43.00
  • Pink Stripe Smocked Birthday Dress Young girl wearing a pink dress with embroidery and a blue bow in her hair, standing outdoors.

    Pink Stripe Smocked Birthday Dress

    $45.00
    $45.00 $45.00
  • Pink Stripe Smocked Birthday Bubble Young girl in a white dress with pink details standing outdoors in a natural setting.

    Pink Stripe Smocked Birthday Bubble

    $43.00
    $43.00 $43.00
  • Birthday Print Knit Diaper Set Young girl wearing a patterned blouse and shorts with a pink bow in her hair, standing outdoors.

    Birthday Print Knit Diaper Set

    $41.00
    $41.00 $41.00
  • Birthday Print Knit Bubble

    Birthday Print Knit Bubble

    $37.00
    $37.00 $37.00
  • Smocked Happy Birthday Bubble Young girl wearing a pink 'Happy Birthday' dress outdoors with a blurred background

    Smocked Happy Birthday Bubble

    $42.00
    $42.00 $42.00
  • Pink Gingham Knit Happy Birthday Bubble Young girl in a pink dress with a large white bow outdoors

    Pink Gingham Knit Happy Birthday Bubble

    $42.00
    $42.00 $42.00
  • Birthday Applique Short Set Child wearing a light blue shirt with a robot design and shorts outdoors on grass

    Birthday Applique Short Set

    $43.00
    $43.00 $43.00
  • Birthday Cake Bow Dress Young girl wearing a floral dress with ruffles and a pink bow, standing outdoors with flowers in the background.

    Birthday Cake Bow Dress

    $39.00
    $39.00 $39.00
  • Birthday Cake Bow Bubble Young girl in a floral outfit standing on a wooden deck with white railings.

    Birthday Cake Bow Bubble

    $37.00
    $37.00 $37.00
  • Birthday Party Animals Bubble Young girl wearing a white blouse with pink ruffled collar and floral design outdoors.

    Birthday Party Animals Bubble

    $37.00
    $37.00 $37.00
  • Birthday Party Animals Dress Children's dress with animal pattern and pink ruffled collar against a blurred outdoor background

    Birthday Party Animals Dress

    $39.00
    $39.00 $39.00
  • Birthday Party Animals Night Gown Young girl in a pink floral nightgown standing on a sidewalk with a blurred background

    Birthday Party Animals Night Gown

    $34.00
    $34.00 $34.00
  • Birthday Party Animals Legging Set Young girl in a light-colored legging set with floral patterns and pink leggings standing outdoors.

    Birthday Party Animals Knit Legging Set

    $40.00
    $39.00 $40.00
  • Birthday Party Animals Knit Zipper Pajamas Two young girls wearing matching birthday pajamas with a garden background

    Birthday Party Animals Knit Zipper Pajamas

    $32.00
    $32.00 $32.00
  • Birthday Party Animals Knit Pajamas Child wearing pink long-sleeve pajamas with animal birthday prints against a green background

    Birthday Party Animals Knit Pajamas

    $32.00
    $32.00 $32.00

Frequently asked questions

What are the best first birthday outfits?
Classic smocked birthday bubbles, embroidered shortalls, and sweet birthday dresses made from soft cotton are perfect for comfort and photos.
Do you sell first birthday dresses for girls?
Yes, shop smocked and embroidered birthday girl dresses with bows, cupcakes, or balloon designs. Many are monogram ready for personalization.
Do you offer first birthday outfits for boys?
Absolutely. We carry birthday boy outfits like shortalls, bubbles, and two piece sets with classic applique and smocked birthday designs.
Can I get a personalized or monogrammed birthday outfit?
Many of our baby birthday outfits and birthday dresses are monogram ready so you can add initials or a name for a custom gift.
Do you have matching sibling outfits for birthdays?
Yes, many of our first birthday collections include coordinating boy and girl styles so siblings can match for party photos.
What sizes do you carry for birthday outfits?
We stock sizes from 12M through 8, with select styles available up to 6 for big brother or sister matching.
When should I order for my child’s first birthday?
We recommend ordering early to ensure availability and allow time for personalization. Use filters to view in stock options for faster delivery.