Create the Perfect DIY Mario Costume
Mario is a hot topic at our house. From the classic games to the newest Super Mario Bros. movie, we’re fans on every level! Playing dress-up is one of my 4-year-old’s favorite ways to spark imaginative play, and sewing is my favorite hobby, so homemade costumes were a natural fit. This Halloween, we’re dressing up as all the different versions of Mario—Fire Mario, Ice Mario, Metal Mario, Star Mario, and more! Each DIY Mario costume includes the classic plumber overalls, Mario hat, long-sleeve shirt, mustache, and gloves. While I sewed most of our costumes, you can easily shop for pieces and put together your own DIY Mario look!
DIY Mario Costume Types
Fire Mario
White hat, red overalls, white shirt. Known for throwing fireballs.
Metal Mario
Metallic silver hat, overalls, and shirt. His entire body is metallic, making him heavy and immune to damage or water.
Star Mario
Red hat, blue overalls, and red shirt (all glowing with rainbow colors under the effect of a Super Star).
Ice Mario
Light blue hat, red overalls, light blue shirt. He shoots ice balls.
DIY Mario Costume Hats
I have been looking around for a good Mario hat tutorial, but I have been struggling to find one that has a style I like. There are many free patterns for Mario costumes for kids out there which are great, but none of them lived up to my standards or vision.
I didn’t want my Mario hats to be felt or fleece and I wanted them to be shaped like Mario’s plumber hat. So I started to search the internet.
I would find a pattern that I thought would work, then I would make it. I made Mario hats from 4 different tutorials and disliked all of them. Some were too stiff, others were too floppy.
Just when I was about to give up, I found a plumber hat pattern on a Japanese website. It looked perfect! It is exactly what I had in mind when I started my mission to make Mario’s hat! Except… I don’t speak (or read) Japanese and Google Translate can only get you so far. So with some trial and error, I figured out this DIY Mario hat! And I think they turned out perfect!
I thought I would give you a little tutorial on how to make this free pattern.
Step 1: Cut the Fabric Pieces
Start by measuring the head size for the person you're making the hat for. For reference, I used size 50 for the baby and size 64 for the rest of my family (husband, boys, and myself).
Once you have your measurements, find and print the Mario plumber hat pattern HERE. The sizes are in inches at the end of the pattern list for easier reference.
Now, let's cut out the fabric pieces. You'll need:
- Fabric of choice (I used broadcloth cotton)
- Iron-on interfacing (for stability)
You'll be cutting out 9 pieces:
- Top (1)
- Side (1)
- Brim (2)
- Brim Interfacing (1)
- Side Lining (1)
- Emblem Circle (1, in white)
- M (1)
Step 2: Attach the Interfacing
Iron the interfacing onto the wrong side of the coordinating fabric pieces:
a. Attach the brim interfacing to one of the brim pieces.
b. Set aside for now.
Step 3: Assemble the Brim
With the right sides together, sew the two brim pieces along the outer curved edge. One of these should have the interfacing attached.
After sewing, turn the brim right side out and press to ensure a clean curve. Set the brim aside.
Step 4: Add the Emblem to the Side Piece
Next, sew the emblem.
- Take the white circle emblem piece and either sew or use iron-on vinyl to attach the fabric "M" to the center.
- Once the "M" is in place, sew the white emblem (with the "M") onto the center of the side piece of the hat.
Step 5: Attach the Top to the Side
Now, sew the top of the hat to the side piece:
- Fold the top piece in half and align it with the center points of the side piece.
- Sew around the circular edge, connecting the two pieces.
- Turn the hat right side out and press the seams flat.
Step 6: Sew the Brim to the Hat
Sandwich the brim between the side piece and the side lining piece:
- Align the side pieces right sides together with the brim in between them.
- Sew around the bottom edge of the hat, making sure to catch all layers, including the brim.
- Turn the hat right side out and press the seam.
Step 7: Topstitch the Bottom Edge
Finally, after pressing the bottom seam, topstitch around the lower edge of the hat for a clean finish.
Now, your homemade Mario hat is complete! This Mario hat sewing guide will help you create the perfect hat for your little one’s imaginative adventures. Whether it’s for Mario-themed dress up or a Mario costume for Halloween, I hope this tutorial will help your mission of creating Mario costumes a little easier. Enjoy the process of crafting your very own DIY Mario hat!
DIY Mario Costume Overalls
We used the Patterns for Pirates overalls pattern for our Mario costumes. The pattern was easy to follow, and the best part was being able to customize the fabric colors to match each Mario version perfectly.
DIY Mario Costume Shirts
We love the Peek-a-Boo Pattern Shop, and to create the perfect shirts to color-match our hats, we used their Kid's Essential Tee pattern. The skill level is beginner, and the long sleeve shirt was super simple to make, making it perfect for our costumes!
Other Costume Ideas
If you're looking for other family costume ideas besides Mario, we’ve got you covered! Check out our blog post on “Where the Wild Things Are” for some whimsical costume inspiration. Or dive into our “Family Costume Ideas” post for even more fun suggestions. There’s plenty of creativity to explore for a standout family look!





















































0 Comments