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The trick in Kim Mu-jin’s navy look in Love Is Coming is the gray collared knit: it softens the jacket without blurring the shoulder line. For a casual office or dinner, compare shoulder width and room through the chest first. The shopping links are similar styles, with the differences called out beside each item.
The Navy Double-Breasted Jacket and Heather Gray Knit
A standout piece in Kim Mu-jin's mid-season wardrobe is his deep navy double-breasted blazer. Double-breasted jackets naturally add width and visual presence across the chest, but this look avoids boardroom stiffness by pairing the tailored shell with a soft heather gray buttoned knit polo.

The contrast between the structured navy fabric and the melange heather gray base layer balances formal authority with comfortable movement. Notice how the three-button placket on the knit top remains partially unfastened to frame the neckline cleanly without competing with the jacket's peak lapels.

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For readers looking to capture this structured yet casual balance, finding an accessible double-breasted jacket with neat shoulders is the first step. You can check the KSWYCT navy double-breasted blazer — similar style on Amazon for current sizing, cut specs, and material details. Underneath, a soft long-sleeve knit like the COOFANDY grey long-sleeve knit polo — similar style offers a comparable collar fold and multi-button chest placket for easy layering.
Khaki-Beige Tailoring with Peaked Lapels and Dark Underlayers
In Episode 13, Kim Mu-jin switches palettes with a tailored khaki-beige blazer that features distinct peaked lapels. Earthy tones can sometimes appear washed out under bright studio lighting, but grounding the khaki jacket with an ink-black buttoned underlayer sharpens the overall silhouette.


The deep V-break created by the single-button fastening works well for anyone wanting to elongate their torso. By skipping a tie and leaving the black knit collar relaxed, the chest area remains light and contemporary.

When wearing this combination off-screen, slim dark trousers or charcoal chinos help anchor the upper-body contrast without introducing conflicting color blocks.
Off-Duty Contrast: Waffle Knits and Athletic Shells
The ivory open-knit polo and pale jacket create a softer, more relaxed mood than the navy combination. The visible knit pattern adds interest without needing a bright print.

The pale gray zip jacket over a dark top gives a sportier option for a weekend walk or a casual meetup. Its upright collar and dark zipper create contrast without adding a busy pattern.

Keeping the palette to navy, gray, ivory and black makes these pieces easier to combine. Choose the zip jacket for a relaxed outing or the textured knit under a blazer for dinner. Check the garment label for fiber content rather than inferring it from the screen.
Style Takeaways and Proportions for Daily Wear
Replicating Kim Mu-jin's wardrobe comes down to smart collar choices and proportion control:
- Swap Stiff Poplin for Knitwear: Instead of woven dress shirts, choose medium-weight knit polos or henleys. The ribbed collars settle naturally beneath blazer lapels without curling awkwardly.
- Respect Shoulder Proportions: A double-breasted blazer demands clean shoulder structure. If you have a broader frame, unbuttoning the front jacket button creates vertical visual space. If you have a narrower frame, buttoning the inner anchor keeps the front panels tidy.
- Stick to Dual Tones: Notice how each outfit pairs two primary shades: navy with heather gray, khaki with pure black, or ivory with off-white. Limiting the palette prevents tailoring from looking cluttered.
For more television wardrobe breakdowns, see our coverage of Love Comes Along Episode 6 Outfits: Everyday Tailoring and Casual Knits. Current retail pricing, fabric blends, and size ranges for similar items are available directly on the respective seller pages.