Rainbow unicorns are my favorite unicorns. Bright, bold, and magical! Here are 11 awesome tutorials and tips for making your own rainbow unicorn costume for Halloween, pretend play, or for a unicorn birthday party. Many of the accessories would be awesome to make for party favors!

7 DIY Rainbow Unicorn Costume Ideas

Felt unicorn mane // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

This amazing no sew felt unicorn mane is a show stopper! All you need is a ton of felt and hot glue. You could even skip the cape and just glue the rainbow mane to a hoodie, making this even easier.

DIY unicorn hoodie and tutu // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

Here’s another felt mane that takes the costume above up a few notches! Felt mane, felt flowers, sewn ears, and a DIY ribbon-edged tutu make this a bright fun, but time-consuming costume. It looks amazing if you have the patience!

11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

I’m loving the look of this yarn mane – the thinner “hairs” look even more like a mane except it looks like the mane of a stuffed toy unicorn, which is so adorable for a little kid!

Rainbow Dash hair tutorial // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

If your little one specifically wants to be Rainbow Dash or just loves the idea of a rainbow unicorn, this video tutorial is awesome! It requires temporary hair color and colorful extensions so a bit more involved, but the finished look is pretty amazing.

11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

Here’s another awesome costume using fake hair extensions. This whole costume is pretty epic! The gold mask, the furry leg warmers, the gold tights. Unfortunately, while the photographer shares lots of amazing shots, she doesn’t spill any details on how she made or where she bought the costume pieces. It’s still great inspiration if you’re crafty though!

Rainbow pegicorn costume // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

If you have a fabric store nearby, finding fun colorful fur makes for an easy-to-put-together unicorn costume! Loving the cotton candy stripes.

Unicorn mask template // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

My felt unicorn mask template is super easy and really fun to customize. I’ve made unicorn masks in tons of color combos for local craft fairs. Kiddos love wearing them for pretend play and they’re great unicorn party favors too! Download the free template and make your own to complement your unicorn costume.

4 Rainbow Unicorn Costume Items You Can Buy

Don’t want to DIY? Here are some unicorn costumes and accessories you can get ready-made.

Unicorn hooded PJs // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

Cozy and colorful rainbow unicorn hooded pajamas – including a matching mommy and me version!

Knit hooded unicorn scarf // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

This knit hooded scarf is perfect to wear all the way from Halloween through winter.

Rainbow tutu // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

Pair your hoodie, scarf, or unicorn shirt with a rainbow tutu like this one for maximum color.

Rainbow unicorn shirts // 11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday

And of course, my snap-on unicorn finger puppet shirts!

Have you seen other epic rainbow unicorn costume ideas that I’m missing? Please share in the comments!

PS: if you are planning a unicorn birthday party and would like to get my free professionally designed printables in your inbox, enter your email below. You’ll get cupcake wrappers, toppers, thank you card, and party favor bag tags.


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11 amazingly bright, bold, and fun rainbow unicorn costume ideas you can DIY or buy #unicorn #rainbowunicorn #unicorncostume #unicornparty #unicornbirthday