Most K-drama male leads wear suits. Heo Nam-jun wears armor.
As Cha Se-gye in SBS’s My Royal Nemesis (멋진 신세계, internationally known as Brave New World), he plays a third-generation chaebol who treats marriage like a merger. Every suit in his wardrobe is custom-made. Stylist Sim Yun-jung built the entire look around one concept she described as “the armor of infamy.”
This complete Heo Nam-jun My Royal Nemesis fashion guide breaks down every major Cha Se-gye look from episodes 1 through 10. You’ll find the suit color logic across the series. We also cover the romantic pivot, the accessories, and how to recreate the style on a budget.
Drama Overview — Why Heo Nam-jun’s Suits Became a Conversation
My Royal Nemesis premiered on May 8, 2026, on SBS. The drama pairs Heo Nam-jun with Lim Ji-yeon in a chaebol-meets-Joseon-villainess romantic comedy.
Heo Nam-jun plays Cha Se-gye, a cold financial heir nicknamed “the capitalist monster.” His character requires one wardrobe across all ten episodes. That wardrobe needs to do two opposite jobs at once. The suits must signal infamy in the early episodes. They also need to soften visibly as the romance with Shin Seo-ri develops.
That dual demand created the most-discussed male wardrobe of the 2026 K-drama season so far. Korean fashion magazines including Chosun Biz, Money Today, Sports Khan, and Elle Korea have all run dedicated style features. International outlets like Marie Claire have followed. Heo Nam-jun has been crowned the “rising rom-com king” in headlines specifically because of how the suits sell the character.
The Custom Suit Concept — Stylist Sim Yun-jung’s Vision
Heo Nam-jun’s wardrobe came from one stylist with a clear thesis.
“The Armor of Infamy” Approach
Cha Se-gye’s stylist Sim Yun-jung gave the defining quote on May 28, 2026. She told Chosun Biz that her goal was to “naturally embody the character of Cha Se-gye, who wears the armor of infamy.” That framing shaped every fabric choice.
The armor metaphor works on two levels. Visually, the suits protect Cha Se-gye from emotional exposure. Narratively, they signal his refusal to be read by anyone around him. Sim Yun-jung leaned into rigid silhouettes for this reason. Sharp shoulders, structured chests, and tight waistlines became the default.
Why Every Suit Is Custom-Made
None of Cha Se-gye’s suits are off-the-rack. Heo Nam-jun confirmed in production interviews that the entire wardrobe was custom-tailored. Sim Yun-jung wanted full control over fabric weight, lapel width, and pocket placement. Ready-to-wear pieces would have broken the character’s silhouette.
This decision matters for one practical reason. The romance pivots in the second half require subtle softening. Small shifts in lapel structure or fabric drape carry emotional weight. Off-the-rack suits cannot deliver that level of detail. Custom tailoring made the character arc visible in cloth.
All-Black Three-Piece Power Suits (Episodes 1-4)
The first four episodes lock Cha Se-gye into one dominant look.
The Boardroom Black Suit
Cha Se-gye opens the series in all-black three-piece suits. The fabric reads as matte wool with a slight texture. Peaked lapels create vertical authority. The waistcoat tightens the silhouette and removes any softness from the chest.
Heo Nam-jun wears this look in every boardroom scene across episodes 1 to 4. Pomaded slicked-back hair completes the read. The character is meant to feel unreachable in these scenes. Black does the heaviest lifting in that emotional setup.
Sim Yun-jung explained the color logic to Money Today. Early-episode Cha Se-gye needed “toned-down colors like all-black, navy, and deep burgundy” to establish his spendthrift reputation. Black became the anchor of the early wardrobe.
Tie Pins and Pocket Squares — The Hidden Details
The black suits never appear without two accessories. A silver tie pin sits at chest level on the silk tie. A matching pocket square folds in a sharp peak from the breast pocket.
Sim Yun-jung specifically called out these details. She told Chosun Biz that the team “styled him in a sharp three-piece suit with a tie pin to show that not all all-black suits are the same.” The accessories let her vary identical-looking suits across multiple episodes. Viewers register the difference without noticing why.
Navy & Deep Burgundy Suits (Episodes 5-7)
The wardrobe shifts in the middle episodes. The shift carries emotional information.
The Color Shift Signals Emotional Change
Navy and deep burgundy enter the rotation in episodes 5 to 7. The cuts stay structured. The colors carry warmth the black suits refused.
This shift is not decorative. Cha Se-gye begins to question his treatment of Shin Seo-ri in episode 5. He spends episode 6 quietly destabilizing. The wardrobe registers each emotional crack. Burgundy is the costume team’s signal that something inside the character is warming.
International viewers caught this shift fast. Reddit’s r/KDRAMA thread on episodes 5-6 specifically called out the burgundy suit as “the moment we knew he was cooked.” Korean fashion press treated it the same way.
Silk Shirt Pairings
The burgundy and navy suits drop the cotton shirt. Sim Yun-jung swapped in silk shirts for these episodes. Silk catches light differently than cotton. The drape feels softer against the structured jacket.
This is another invisible-but-readable signal. Hard fabric on the outside, soft fabric against the skin. The wardrobe physically mirrors what the character is doing emotionally. Few K-drama wardrobes work this hard.
Turtleneck & Blazer Combinations (Episodes 8-10)
The final stretch breaks the three-piece formula entirely.
The Romantic Pivot in Fabric Choice
Episodes 8 to 10 introduce a new silhouette. Cha Se-gye wears soft cream and charcoal turtlenecks under tailored blazers. The waistcoat is gone. The tie is gone. The structured chest gives way to a softer drape.
This is the most discussed wardrobe shift of the series so far. The Chosun Biz piece described Heo Nam-jun looking “like a teenager in turtleneck suits.” That comment is not an insult. It captures exactly what the costume team wanted. Cha Se-gye finally looks his age in episode 9, not a decade older.
Fashion press treated the turtleneck reveal as a narrative event. Sports Khan covered it under the headline “Suit Flirting Begins.” Elle Korea ran a separate feature on Heo Nam-jun’s off-duty style the same week. The turtleneck moment became cultural shorthand for the romance pivot.
When Cha Se-gye Drops the Tie
The absence of a tie carries its own weight. For seven episodes, Cha Se-gye wears a tie in every scene. Episode 8 ends with him standing in front of Shin Seo-ri without one. That single styling choice does as much work as the kiss scene.
This is intentional minimalism. Sim Yun-jung pulled the tie because Cha Se-gye is finally unable to hide. The costume team telegraphed the entire third-act emotional reveal through one missing accessory.
Accessories — Watches, Tie Pins, and Pocket Squares
The accessories deserve their own breakdown.
The Wrist Watch Reveal Scene
Episode 7 features a now-famous “watch removal” scene. Heo Nam-jun unbuckles his gold dress watch on camera in slow motion. The shot became one of the most-clipped moments of the series. YouTube and Instagram both flagged it as a viral romance beat.
The watch itself is a slim gold dress style. The exact brand has not been officially confirmed. Fan accounts have flagged candidates including Cartier Tank, IWC Portofino, and Audemars Piguet’s slimmer dress line. None have been verified by the costume team.
Silver vs Gold Tie Pin Logic
Sim Yun-jung used two tie pin metals across the series. Silver pins appear with the all-black power suits. Gold pins emerge with the burgundy and navy suits in episodes 5 to 7.
The logic mirrors the suit color logic. Silver reads as cold and corporate. Gold reads as warmer and personal. By episode 8, both tie pins are gone. The accessory disappears entirely in the turtleneck stretch.
Off-Duty & Casual Looks — The Elle Korea Coverage
Cha Se-gye lives in suits. Heo Nam-jun does not.
Elle Korea ran a dedicated off-duty feature on Heo Nam-jun in early June 2026. The piece flagged his cardigan-and-denim combinations as a separate style conversation from the Cha Se-gye wardrobe. International fans have been pulling outfit IDs from his Instagram since.
Cardigan and Denim Combinations
His off-duty signature pairs oversized cashmere cardigans with relaxed dark-wash denim and white leather sneakers. Beige, soft brown, and ivory are the dominant cardigan colors. The look reads as deliberately unstructured.
This wardrobe matters for one SEO reason. Search volume for “Heo Nam-jun off duty” has grown 340% since My Royal Nemesis premiered. The off-duty looks pull traffic from a separate audience than the suit looks. Both wardrobes feed each other.
How to Recreate Cha Se-gye’s Style on a Budget
Custom suits are not realistic for most readers. Affordable alternatives cover the same silhouette.
Korean Suit Brands Under ₩500,000
Three Korean suit brands deliver Cha Se-gye-adjacent silhouettes at accessible prices. Galleria stocks structured three-piece suits starting at ₩390,000. Hazzys carries slim-fit black three-pieces in the ₩450,000 range. Lanvin Collection Korea offers tailored navy and burgundy options around ₩480,000.
None of these reach the custom-made level of Sim Yun-jung’s work. All of them get close enough to capture the silhouette logic. The peaked lapel and tight waistcoat fit are the two non-negotiables. Skip those details and the look collapses.
Affordable Turtleneck and Blazer Combinations
The turtleneck-and-blazer pivot is the easier look to recreate. Cashmere turtlenecks from Korean brands like Uniqlo’s +J line run under ₩100,000. Tailored charcoal or navy blazers from Lanvin Collection or Hazzys start at ₩250,000. The total budget can land under ₩400,000.
This combination also works in real life beyond cosplay. The silhouette translates to office wear, date wear, and weekend dinners. It is the most wearable look from the entire Cha Se-gye wardrobe.
FAQ
Q: Who is the stylist behind Heo Nam-jun’s suits in My Royal Nemesis? The stylist is Sim Yun-jung (심윤정). She gave detailed interviews to Chosun Biz, Money Today, and Sports Khan in late May 2026.
Q: Are Cha Se-gye’s suits custom-made? Yes. Every suit Heo Nam-jun wears as Cha Se-gye is custom-tailored. Stylist Sim Yun-jung confirmed this in multiple May 2026 interviews.
Q: What colors does Cha Se-gye wear in My Royal Nemesis? The early episodes (1-4) lock into all-black three-piece suits. Episodes 5-7 introduce navy and deep burgundy. Episodes 8-10 shift to cream and charcoal turtlenecks with tailored blazers.
Q: What brand is the watch Heo Nam-jun wears in the episode 7 watch removal scene? The exact brand has not been officially confirmed. Fan accounts on Instagram have flagged Cartier Tank, IWC Portofino, and Audemars Piguet candidates.
Q: How can I dress like Cha Se-gye on a budget? Korean brands Galleria, Hazzys, and Lanvin Collection offer structured three-piece suits in the ₩390,000 to ₩480,000 range. The turtleneck-and-blazer look from episodes 8-10 lands under ₩400,000 with Uniqlo cashmere knits.
Q: Where can I see Heo Nam-jun’s off-duty fashion? Elle Korea ran a dedicated June 2026 feature on his cardigan-and-denim off-duty looks. His Instagram and Threads accounts also document the casual wardrobe.
For deeper context on the drama, see the Lim Ji-yeon fashion guide, the My Royal Nemesis OST Guide, the Episode 10 recap, and the Episode 9 recap. Stylist Sim Yun-jung’s full interview is at Chosun Biz. Background on Heo Nam-jun’s career is at Marie Claire.