DIY Easy Monster Costume Idea

Patch up your little monster’s worn jeans with Jessica Entwistle’s tutorial for a quick Halloween costume idea.

Easy monster costume idea

Designer Jessica says: “Kids always seem to wear out at least one knee of every pair of jeans and trousers they own – I write from experience! Instead of recycling them, why not upcycle them by adding a monster patch to the knee. It’s really easy to do and the kids love the end result. Here’s my quick and easy version, perfect for Halloween!”

You will need

How to make a monster costume
Cat Cape sewing pattern

Let’s go! How to refashion jeans with a monster patch


Total time:

Cutting out

Step 1

Cut away any frayed edges from the hole in the jean knee to make a bigger mouth for your monster.

Step 2

Cut the orange fabric so that it is 2cm (3/4in) larger than the hole all the way around.

Step 3

Trace around the templates from the pull-out pattern sheet to use as patterns for the monster face.

Step 4

Cut out the teeth and eyeballs from white felt and the pupils from black felt by pinning the patterns on the felt and cutting around them. You can enlarge or reduce these on a photocopier if needs be to fit the hole.

step 1 cut out the pieces

Stitching the eye

Step 5

Thread your needle with six strands of orange stranded cotton. Sew the black felt pupil onto the white felt eyeball using small straight stitches spaced evenly apart. Make sure they are of a similar length.

Step 6

With the needle still threaded, pin the sewn eye to your jeans just above the hole. Refer to the photograph for the positioning for the eye, or place it where you want it to be. Pin and then sew the eye into place using straight stitches.

Step 7

Repeat this to pin and stitch the other eye in place.

stitching the eye

Adding the teeth

Step 8

Work a machine zigzag all the way around the edge of the orange fabric to stop it from fraying.

Step 9

Work out the monster teeth placement by pushing the orange fabric and teeth through the hole in your jeans. Once you’re happy with this, sew the monster teeth onto the orange fabric using your sewing machine for added strength.

Make the mouth

Stitching the mouth in place

Step 10

Pin the monster mouth inside the hole of your jeans.

Stitch the mouth in place

Step 11

Tack the mouth into place to stop it moving while you stitch.

Finish your monster jeans

Step 12

Using six strands of orange stranded cotton, carefully sew the patch onto your jeans by working a running stitch, then working straight vertical stitches between them. Keep these stitches evenly spaced and worked to the same length.

Sdd emnbroidered details

Step 13

Remove the tacking stitches and hand your jeans over to your own delighted little monster.


How to make a monster costume