FallHalloween. October 10th, 2025

15 Adorable DIY Baby Girl Halloween Costume Ideas

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Halloween is a magical time, and dressing up your little one in a charming costume makes it even more special. While store-bought options are plentiful, there’s something incredibly heartwarming and unique about a DIY baby girl Halloween costume. Not only can you tailor it perfectly to her size and comfort, but it also adds a personal touch that store-bought can’t replicate.

You will find easy, adorable, and budget-friendly baby girl Halloween costume DIY ideas, complete with tips to ensure her comfort and safety. Get ready to unleash your creativity and make this Halloween unforgettable! Whether you’re planning a family photo session, trick-or-treat walk, or cozy night in, DIY baby girl Halloween costumes offer creativity, comfort, and savings.

Why Choose DIY for Your Baby Girl’s Halloween Costume?

  • Uniqueness: Stand out from the crowd with a one-of-a-kind creation.
  • Comfort and Fit: Customize materials and sizing to ensure your baby is cozy and happy.
  • Budget-Friendly: Often, DIY costumes can be made using items you already own or inexpensive craft supplies.
  • Personal Touch: Infuse your love and creativity into every stitch or glue dot.
  • Photo-Ready: These unique costumes make for adorable, memorable photos!

These are cute, easy and affordable DIY costume ideas for Baby Girl. Baby Halloween costumes should be comfortable. You will also love the no sew Halloween costume ideas.

5 Easy DIY Baby Girl Halloween Costume Ideas

These ideas are chosen for their cuteness, ease of creation, and baby-friendliness, often using a base of a plain onesie or comfortable clothes.

COSTUME IDEA MATERIALS NEEDED ASSEMBLY STEPS WHY FOR BABIES?
1. Little Lamb

 

White onesie, white felt, cotton balls or faux sheepskin fabric, white beanie/headband, fabric glue.

 

Glue cotton balls/faux sheepskin onto the onesie. Cut felt ears and attach to beanie.

 

Soft, cozy, and allows for full mobility. Looks incredibly sweet and innocent.

 

2. Strawberry Sweetheart

 

Red onesie, green felt (for leaves), black permanent marker or fabric paint, green beanie/headband.

 

Draw “seeds” onto the red onesie. Cut leaf shapes from green felt and attach to the collar of the onesie and the beanie.

 

Bright, cheerful, and recognizable. Easy to put on/take off for diaper changes.

 

3. Tiny Chef

 

White onesie, white baby apron (or cut from white fabric), toy cooking utensils, chef’s hat (DIY from white paper/felt).

 

Decorate the apron with fabric markers (e.g., “Head Chef”). Secure a toy spoon to the onesie. Fold/glue paper to create a chef’s hat.

 

Humorous and allows for interaction with props. Uses everyday clothing as a base.

 

4. Garden Gnome

 

Brightly colored onesie (e.g., blue or red), felt beard (grey/white), gnome hat (red felt or fabric), black belt/ribbon.

 

Attach felt beard to hat or a pacifier clip. Create a pointed gnome hat. Add a black ribbon “belt” around the onesie.

 

Whimsical and charming. The main focus is the hat, which babies often tolerate well.

 

5. Adorable Octopus Onesie, 4 pairs of baby leggings/socks (matching colors), coordinating felt or fabric for eyes, stuffing (optional). Stuff pairs of leggings/socks for “arms.” Attach them securely to the sides of the onesie. Add large felt eyes to a coordinating hat. Unique and fun! The “arms” are soft and poseable, making for great photos.

Essential Tips for DIY Baby Costumes

Making a costume for a baby requires a few extra considerations to ensure safety and comfort.

Prioritize Comfort:

  • Choose soft, breathable fabrics. Avoid anything scratchy, too tight, or that restricts movement. Remember layers for warmth if trick-or-treating in cooler weather.

Safety First:

  • No Small, Detachable Parts: Buttons, beads, or anything a baby could choke on should be securely sewn or glued, or avoided entirely.
  • Ventilation: Ensure hats or hoods don’t obstruct breathing.
  • Visibility: Make sure your baby’s vision isn’t impaired.
  • Non-Toxic Materials: Use baby-safe paints, glues, and fabrics.
  • Diaper Change Friendly: Design costumes that allow for easy diaper access. A onesie base is always a good idea!
  • Simplicity is Key: Babies often tolerate costumes for short periods. Don’t overdo it with complex designs.
  • Test It Out: Have your baby try on the costume before Halloween to ensure they are comfortable and happy in it.

 

What to Use as a Base: Common Baby Items

Many DIY costumes start with simple, everyday baby clothes.

  • Onesies: The ultimate base for almost any costume!
  • Footie Pajamas: Great for full-body coverage, especially for animal costumes.
  • Leggings and Shirts: Easy to layer and accessorize.
  • Beanies and Headbands: Perfect for adding ears, flowers, or other headpiece elements.

baby girl halloween costumes

DIY Baby Girl Halloween Costumes

1. Baby Bird Costume

Cute Baby Bird Halloween Costume made with felt.

baby bird halloween costume

2. DIY Fox Costume

I love this little red riding hood fox costume made with additions to a dress/ coat.

baby fox costume

3. Black Cat Costume

Make this cute black cat outfit with a headband and tail added to a black onesie or dress.

baby cat halloween costume

4. Little Mermaid Costume

An adorable infant mermaid costume made with seashells, crochet and tulle.

baby mermaid halloween costume

5. No Sew Cupcake Costume

Cupcake theme is widely popular this year for little girl’s birthdays. And I love this no sew cupcake costume.

baby cupcake costume

6. Black Cat Costume

A slightly different black cat costume with tutu and fur.

DIY black cat costume

7. Baby Fist costume

Make this cute Halloween fish costume with felt.

baby fish diy costume

8. DIY Ghost costume

A simple ghost tutu costume made with painted ghost face t-shirt and polka dots leggings.

ghost baby costume

10. Ladybug Costume

I love this ladybug carrier slipcover. Turn a red slipcover into a ladybug by adding red wings with black polka dots.

lady bug carrier costume

11. Russian Doll Costume

This is more than a costume. Who wouldn’t adore making their little princess a doll costume!

russian doll costume

12. Owl Costume

Add a feathers rope to a dress with a cute owl faced hat. And viola! Baby owl costume is ready.

owl baby costume

13. Pumpkin Costume

A little pumpkin in the house. I love the headband that goes along with it.

pumpkin baby costume

14. Rainbow costume

A very cute rainbow outfit for a bright day.

rainbow baby costume

15. Witch Costume

What’s not to love about this costume idea! Make a cute little baby witch costume.

witch baby costume

16. Sushi Costume

Turn a white onesie into a sushi infant Halloween costume with felt add-ons.

sushi baby onesies

17. Superhero costume

And for that family with boys, a girl is definitely growing up to become a wonder woman.

wonder woman superhero baby costume

Answering Common Baby Halloween Costume Questions:

Here are the most frequently asked questions about dressing up little ones for Halloween:

1. What age is best for a baby’s first Halloween costume?

Any age! Even newborns can participate in Halloween fun with a simple swaddle or onesie costume. The key is to keep it comfortable and safe for their age and developmental stage.

2. How do you keep your baby warm while trick-or-treating?

Layering is essential. Start with a warm onesie or footie pajamas as the base. Design your costume to go over these layers, or choose materials like fleece or flannel for the costume itself. Consider adding a warm hat and booties.

3. What about costumes for babies who crawl or walk?

For active babies, prioritize mobility. Avoid long skirts, capes that could trip them, or anything that restricts arm and leg movement. A costume based on a comfortable romper or pants and a shirt is ideal.

4. Can you use hot glue for baby costumes?

Hot glue can be used for attaching felt, fabric, or other items to a costume, especially if it’s not directly against the baby’s skin. However, ensure that all glued elements are very securely attached and won’t detach and become a choking hazard. For items directly touching skin or that might be chewed, sewing is generally safer.

5. How do you take good photos of your baby in their costume?

  • Natural Light: Find a spot near a window or outdoors during the day.
  • Get Down Low: Shoot at your baby’s eye level.
  • Short and Sweet: Babies have short attention spans. Get your shots quickly.
  • Candid Moments: Capture genuine smiles and interactions, not just posed shots.
  • Simple Background: A plain blanket or wall helps the costume stand out.

baby girl halloween costumes

You May Also Like:

DIY Ghost tutorials

DIY Witch Ideas

Halloween Free Printables

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Hi, I’m Hani

I’m so glad you're here. I'm a mom of 2 with a passion for DIY and crafting. I love to share ideas for turning simple materials into beautiful home and garden decor that brings warmth and personality to any space.

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  1. Donna Wilkes says:

    Hani, love these inspiration boards you create. I have pinned them to my Fall board. As for the costumes, I will be giggling all night over the sushi one. My favorites are both black cats and the fox.

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