Make an adorable Halloween costume for your infant without having to spend a bunch of time or money! Our no-sew sushi Halloween baby costume is inexpensive and easy to make!

This costume is super easy using stiff felt squares and HeatNBond adhesive. With simple shapes and your favorite pair of scissors, you’re a short time away from having the cutest baby costume in the neighborhood.

Don’t be scared to freehand the fish-shape—the beauty is in the imperfection! The trick is to place the orange felt fabric on top of the onesie (you’ll be able to see the shape of the onesie underneath) then draw the fish-shape to fit on the front of the onesie fabric. This way you can make a splendid costume in any size!

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sushi Halloween baby costume instructions
  • onesies (we used size 6–9 months)
  • 1 – 12″ x 15.5″ piece stiff orange felt
  • ink pen or marker
  • 1 – 12″ x 15.5″ piece stiff green felt
  • assorted stiff felt scraps (we used dark green, light green and petal pink)
  • [url href=”″ target=”_blank” title=”HeatNBond”]HeatNBond[/url]
  • fabric scissors
  • iron
  • hot glue gun and hot glue
  • rhinestone embellishments, if desired
  1. Place stiff orange felt on top of onesie then freehand the head, body and tail of a fish-shape using ink pen or marker. The freehand method will make the shape look more realistic. Cut out pieces using fabric scissors then set aside.
  2. Cut the dark green scrap felt into a 7.5″ x 1″ strip then set aside.
  3. Cut 12.5″ x 15.5″ piece of green felt in half, lengthwise, then trim both outer edges in a jagged, triangular pattern like leaves on a sushi serving tray. Again, what makes this costume so great are the freehand details, so don’t concern yourself with perfection! Set aside.
  4. Preheat iron to medium heat, no steam. Place adhesive on back of the material to be bonded—paper liner should face up. Press and hold iron on paper liner for a few seconds then allow it to cool.
  5. Trim off excess paper then peel off backing. Place material adhesive side down, to attach fish shape on onesie. Press and hold iron approximately 8 seconds on each section, one at a time, until all the pieces have bonded. Repeat with dark green strip of felt at the waist, then flip onesie over and repeat with the green leaves.
  6. Set onesie aside to cool. Meanwhile, trim various circles, about the size of a nickel to the size of a quarter, from the pieces of scrap felt to make ‘wasabi’ and ‘ginger.’ Attach to the left or right side of the dark green waistband using hot glue. If desired, add rhinestone embellishments to center of ‘wasabi’ and ‘ginger’ using hot glue. Set aside to let hot glue cool—that’s all there is to it!
Be sure not to use steam when fusing the adhesive to the materials with the iron—it will just make fabric soggy and difficult to stick!


Adorable DIY sushi sleeper costume made with felt