KPop Demon Hunters, a 2025 animated musical urban fantasy action-comedy film, has inspired people of all backgrounds. Besides its high-quality music and songs, the movie viewers have admired its characters. Rumi Kang remains the top pick for the KPop Demon Hunters costume. Many desire to know: How to Wear a Rumi Yellow Jacket to create Rumi’s “How It’s Done” costume. Are you also one of those people? Then, we have covered you for that with this costume guide of ours!
Before starting our Rumi costume guide, let us talk briefly about the character, Rumi. Also, we will share reasons why Rumi Kang is an excellent costume idea.
Who Is Rumi Kang in KPop Demon Hunters?
KPop Demon Hunters from Sony Pictures Animation features Rumi Kang as the main protagonist. She is the leader of a K-pop girl group, HUNTR/X. Also, she is the main vocalist of the group, operating as a trio of demon hunters. As a daughter of the late Mi-Yeong Ryu (mother) and an unnamed demon father, she portrays a half-human and half-demon in the movie. In fact, she is the most beloved KPop Demon Hunters that blend star-power with deep emotions. Her spectacular voice, blended with her flaws and efforts to do many things at once, makes her a popular character.
Why is the Rumi Kang Costume a Popular Idea?
Rumi Kang is a popular costume idea, especially her “How It’s Done Costume,” especially for women and young girls. Here are our reasons to justify: Why?
- It makes the character so relatable as the leader and main vocalist of KPop Demon Hunters.
- It makes you easily recognizable, whether you create her costume for Halloween, cosplay, or a costume-themed party.
- Also, it lets you show your appreciation for the main protagonist, blending emotions with charisma.
Things Needed for a How It’s Done Rumi Kang Costume

It’s time we unveiled to you the things you will need to create your Rumi Kang’s How It’s Done costume. The central piece to creating this costume is the K Pop Demon Rumi Leather Jacket in Yellow, available at Oskar Jacket. So, we’ll mainly emphasize this jacket to create this costume, while talking about other things in brief. Without further ado, let us unveil to you everything you need to create your Rumi’s How It’s Done Costume:
- Yellow Leather Jacket
The yellow leather jacket is the central piece to creating your Rumi’s How It’s Done costume. We have mentioned that already, so you will first need to invest in this piece. At Oskar Jacket, you can shop for the Rumi Yellow Jacket, similar to the Rumi Kang, to create your costume. As we have created it from genuine leather, it is durable and feels natural to wear. As a part of our Halloween 2025 Jackets Collection, it feels comfortable on the inside with its inner viscose lining. Plus, it features a high-quality YKK (Yoshida Kogyo Kabushikikaisha) zipper, so you can confidently put it on or take it off.
Moreover, the KPop Demon Hunters character Rumi-inspired yellow jacket is appropriate for more than just Halloween. Besides utilizing it as a Halloween Rumi Leather Jacket, you may utilize it for other purposes. As an example, you can wear it for cosplays or fan conventions. Apart from that, you may wear it for street-inspired fashion, irrespective of your gender, as it is unisex. Men may pair it with blue jeans with a sweater underneath and brown boots for a fashion statement. Or women may wear it over a royal blue color midi dress with minimal jewelry and flats for casual outings.
Next, find out How to Wear a Rumi Yellow Jacket with the other items and stand out with your Rumi costume.
- Mock-Neck Cropped Top

Apart from the yellow jacket above, you will need a white mock neck cropped top to create your Rumi costume. You will need to wear a mock-neck cropped top as an inner layer to the yellow jacket. If you have it already in your closet, it’s well and good. Otherwise, you will need to buy one, which is easily available online.
- Dark Indigo Denim Shorts

Another item you will need to create your Rumi How It’s Done costume is dark indigo denim shorts. If you already own them as your summer wardrobe staple, you won’t need to buy them. If not, you will need to buy the dark indigo denim shorts, more specifically, high-waisted. Why high-waisted denim shorts? It accentuates your waistline while letting you create a flattering Rumi-like look with comfort.
- Pink Belt

You may already own a pink belt, such as a pink leather belt, as a fashion-conscious woman, to create your Rumi costume. Otherwise, you will need to buy one to create your stylish Rumi costume with a feminine appeal.
- Black Platform Boots

Rumi wears calf-length black platform boots with red stripes for her How It’s Done costume. As black platform boots with red stripes are hard to find, you may stick to black platform boots only for your costume. Not to mention, you may already own black platform boots as a fashion-forward woman.
- Purple Braided Wig

Instead of dying your hair purple for a braided look, you can invest in a purple braided wig for your costume. It will save you time for creating your costume. If you are okay with dying your hair purple for a braided look, you may do that.
- Norigae

Norigae is a key accessory to make your Rumi costume look realistic. You can easily find it online to attach to your pink belt for a realistic look. So, make sure you have the traditional accessory, norigae, too, in purple, for instance.
Apart from the things above, add the following to your costume:
- Two Silver Chain Necklaces
- A Fantasy/Halloween-friendly Sword
Adding the things above will make your costume look very realistic. So, it is best to have these items for a statement Rumi costume.
The Closing Thoughts
KPop Demon Hunters is a highly popular 2025 fantasy action-comedy movie. Besides the soundtrack, the characters featured in it have inspired movie audiences worldwide. Rumi Kang is one of the most beloved characters from this movie, who is also the main protagonist. Because of her star power and emotional character, many want to dress like her. In fact, many people, especially women, want to know: How to Wear a Rumi Yellow Jacket to create a Rumi costume. You can create a Rumi costume with the Rumi-inspired yellow leather jacket, as mentioned earlier, available to shop here.
Moreover, you will need other items, too, to create your very own Rumi’s costume. A white mock-neck top, dark indigo denim shorts, a pink belt, and black platform boots, to reiterate them. Also, you will need a purple braided wig, two silver necklaces, and a fantasy sword to complete the costume. It will ensure you stand out with your costume in the Halloween scene or a costume-themed party.