How to Make Your Own DIY Rumi Costume from KPop Demon Hunters

Who isn’t a huge fan of KPop Demon Hunters these days? We definitely are—and if you’re planning to dress up as Rumi, we know you are, too!

At first, transforming yourself into Rumi might seem tricky, but it’s actually pretty simple when you take it step by step. In this guide, we’ll walk you through how to recreate Rumi’s looks from “How It’s Done,” “Golden,” and “What It Sounds Like” with ease.

We’ll also share where to find the best costume pieces—or even full ready-to-wear outfits—so you can bring your Rumi cosplay to life without the hassle.

Ready to get started? Let’s dive into your Rumi transformation journey!

DIY Rumi KPop Demon Hunters Costume: At a Glance

1. Rumi’s “How It’s Done” Look

Channel Rumi’s confident energy with her classic yellow bomber jacket ensemble. Combine a yellow bomber jacket, white mock neck top, navy shorts, and black combat boots to mirror her signature vibe. For added authenticity, create custom patches for the jacket using fabric paint and felt — this detail really makes the outfit pop.

Outfit Breakdown:

Recreate Rumi’s “How It’s Done” aesthetic with bold streetwear touches and DIY flair.
👉 Find yellow bomber jackets on Etsy or Amazon cosplay stores.

2. Rumi’s “What It Sounds Like” Look

Embrace Rumi’s fierce side with her performance-ready outfit. Go for a cropped mock neck shirt, white shorts, and calf-length boots. To nail her demon-hunter vibe, use water-activated body paint to draw her signature demon markings — a defining element of this look.

Outfit Breakdown:

A sleek, combat-inspired style perfect for fans who love dynamic stage visuals.
👉 Check out Mehron water-activated paints or Snazaroo body paint sets.

3. Rumi’s “Golden” Jacket

Shine like Rumi in her dazzling “Golden” jacket. Start with a plain or sequined black cropped jacket, then add gold trim and embellishments to elevate the design. Don’t forget to attach custom patches on both shoulders to match her on-screen version.

Outfit Breakdown:

A glamorous yet powerful look that highlights Rumi’s leadership and sparkle.
👉 Browse DIY cosplay materials on Michaels or Joann Fabrics.

References

KPop Demon Hunters official trailer – YouTube
Cosplay DIY Inspiration Boards – Pinterest
Character design details from KPop Demon Hunters Wiki – Fandom

Creating Rumi’s “How It’s Done” Costume (DIY)

1. Recreating Rumi’s Iconic Jacket

Rumi’s bright yellow jacket might look complex, but it’s surprisingly easy to pull off once you break it down.
Start with a yellow cropped jacket, such as this one from Amazon. For an even closer match, look for a yellow jacket with black trim, like this version also on Amazon.

DIY Foundation:

A simple yellow cropped jacket provides the perfect base for your Rumi look.
👉 Browse cosplay base jackets on Amazon or AliExpress cosplay shops for affordable options.

2. Add Custom Patches and Details

To capture Rumi’s signature flair, focus on her custom jacket patches.
If you’re crafting from scratch, make your own using fabric paint and felt, then secure them with fabric glue or double-sided tape. You can even download patch templates from independent creators on Etsy, or grab pre-made iron-on patches like this “Rrrrrrumi” patch or this embroidered pink-blue-black design.

DIY Patch Tips:

Personalized detailing gives your jacket authentic Rumi character energy.
👉 Try fabric paint sets from Michaels or adhesive felt from Joann Fabrics.

3. Shop Pre-Made Jacket Replicas

Not into crafting? No worries—there are plenty of Rumi jackets ready to wear.
Netflix offers an official Rumi jacket in its online store. You can also find options from Cossky, which sells a yellow Rumi jacket, or Miccostumes, which has a full Rumi cosplay costume. Additionally, check out Etsy, where independent creators handcraft stunning replicas—like this fan-made version.

Ready-Made Options:

Perfect for fans who prefer a complete cosplay without DIY steps.
👉 Explore Cossky Rumi Jackets or Miccostumes Cosplay Sets.

References

KPop Demon Hunters Official Merch – Netflix Store
Rumi Jacket Templates & Fan Art – Etsy
Cosplay Inspiration & Tutorials – Pinterest

1. Choosing Rumi’s Signature Shirt

Rumi’s “How It’s Done” shirt is refreshingly simple compared to her bold jacket.
She wears a white mock-neck crop top (or turtleneck), which pairs perfectly under the yellow jacket. You can easily find one on Amazon, or score a budget-friendly find at your local thrift store. Whether sleeveless or long-sleeved, both work since the jacket covers most of the shirt.

Style Breakdown:

Focus on the mock-neck style and clean white tone for that iconic Rumi vibe.
👉 Shop basic mock-neck crop tops on Amazon or H&M for simple, affordable options.

2. Adjusting for Comfort and Weather

If you’re dressing up for Halloween or a chilly event, warmth matters!
Instead of a cropped version, you can wear a regular-length mock-neck shirt and still look authentic. The key features—white color and mock-neck design—are what make the outfit instantly recognizable, not the shirt’s length.

Practical Tip:

Stay comfortable while keeping Rumi’s look intact during cooler seasons.
👉 Try heat-retaining mock-necks from Uniqlo or cotton turtlenecks from Zara.

3. DIY and Budget-Friendly Options

Want to save money or customize your look?
A thrift store find or upcycled white tee can easily be turned into a Rumi-style mock-neck. You can cut, hem, or even sew a folded collar to replicate her aesthetic. Pair it with the yellow jacket for the complete transformation.

DIY Inspiration:

Perfect for cosplayers who love personal touches or sustainable fashion.
👉 Check out DIY crop top tutorials on YouTube or cosplay fashion hacks on Pinterest.

References

KPop Demon Hunters Character Outfits – Fandom Wiki
Rumi “How It’s Done” Outfit Guide – Etsy Cosplay Shops
Affordable Fashion Basics – Amazon, Uniqlo, H&M

1. Crafting Rumi’s Signature Shorts

Rumi’s navy shorts are a key detail in her “How It’s Done” outfit, adding a pop of bold color and energy.
She wears navy blue shorts accented with hot pink trim running vertically along each side. If you’re not buying a pre-made costume, you can easily DIY this piece—just find a pair of navy shorts (try Amazon or a local thrift shop) and glue hot pink felt or fabric strips along the side seams using fabric glue.

DIY Tip:

The contrast between the navy and pink captures Rumi’s vibrant, confident vibe perfectly.
👉 Explore fabric trim materials at Joann Fabrics or Michaels.

2. Staying Warm in Cooler Weather

If you’re cosplaying during cold weather, you don’t have to freeze for fashion!
Swap the shorts for navy blue leggings with hot pink side stripes—a warmer but equally stylish option. You can even use iron-on ribbon or fabric tape to recreate the look without sewing.

Comfort & Style Tip:

Leggings make it easy to stay cozy while keeping your outfit screen-accurate.
👉 Try thermal navy leggings from Uniqlo or cosplay-ready athletic wear from Etsy.

References

KPop Demon Hunters Costume Inspiration – Pinterest
DIY Cosplay Shorts Tutorials – YouTube
Fabric and Trim Supplies – Joann Fabrics, Michaels

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