2022.06.14 update

What are the 3 must-have resort outfits featuring open-collar shirts to give your summer holiday look a more mature feel?


As we approach the arrival of summer, we tend to gravitate towards lighter clothing to stay cool during the hot summer months. However, the lighter and more casual our outfits become, the more we worry that our style might lack flair.
In summer, when you wear fewer items of clothing, the key to being stylish is to incorporate a statement piece that can stand alone as the main focus of your outfit. And for summer, I especially recommend the open-collar shirt. With its resort-like feel and touch of sexiness, the open-collar shirt is a must-have item for adult men's summer holiday wear.
This time, we've devised three "classic adult resort outfits" that even those unfamiliar with open-collar shirts can easily incorporate into their wardrobe. We'll introduce them with explanations from our store's buyer.

Table of Contents: What are the 3 must-have resort outfits featuring open-collar shirts?

  1. We interviewed experts to get the go of wearing open-collar shirts!
  2. Q1 What exactly is an open-collar shirt?
  3. Q2 Won't it give off a flashy and mischievous impression?
  4. Q3 I'd like to wear an open-collar shirt, but I don't like patterned ones...
  5. Here are 3 foolproof outfit ideas to help you master the open-collar shirt look.
  6. [Outfit 1] Jacket Style
  7. [Outfit 2] Slacks Style
  8. [Outfit 3] Shorts Style

The open-collar shirt we're introducing today is this one.

Left: ORIAN / Orian ¥29,700

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This open-collar shirt from a leading Italian shirt brand boasts a refined, high-quality look thanks to its meticulous stitching, which is unexpected for a casual shirt. The slightly longer sleeves prevent them from riding up when worn under a jacket. The length is also just right, allowing for a balanced look even when worn untucked with a jacket. (100% Cotton)

Middle: GUY ROVER / Guy Rover 25,300 yen

This shirt is from a prestigious Italian shirt brand, known for producing shirts for luxury brands. The impactful, bold pattern is a key feature of this open-collar shirt. The slightly slim silhouette, shorter sleeves, and compact collar give it a somewhat modern feel. (100% cotton)

Right: FINAMORE ¥34,100

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This shirt, with its faded color palette, exudes a resort-like feel. While it features two different motifs, the motifs themselves are small, so it doesn't stand out too much, allowing for an elegant look. Made from high-quality linen, it offers a soft and comfortable feel. (100% Linen)

We interviewed experts to get the go of wearing open-collar shirts!


Assistant buyer Kozono explains Keita Kozono
Isetan Shinjuku Store, Men's Building 5th Floor: Men's Tailored Clothing Assistant Part-timer
A young employee in his fifth year at the company, he has honed his skills in shirts and ties, as well as ready-made and bespoke dress clothing. He is a classic lover and often wears open-collar shirts both on and off duty, and he buys at least one aloha shirt every season.

Q1. What exactly is an open-collar shirt?


A1. "This is a relaxed-fit shirt that you can wear with the top button unbuttoned."


"This refers to a relaxed-fit shirt with a low-positioned top button that can be left unbuttoned. Because the neckline is more open than a regular shirt, it offers a refreshing feel and is suitable for the spring and summer seasons. It is also known as an 'open-collar shirt'."



Q2. Won't it give off a flashy and mischievous impression?


A2. "Reducing the amount of exposed skin is a good idea."


"To avoid looking too casual, try pairing it with a jacket or slacks, and minimize skin exposure. Adding more formal items to your styling will create a sophisticated and elegant look."


Q3. I'd like to wear an open-collar shirt, but I don't like patterned ones...


A3. "Why not start with a plain, open-collared shirt?"


"Don't worry, we have plain shirts as well as patterned ones. They're simple and make coordinating outfits much easier."
Bagutta shirt: 28,600 yen


□ Isetan Shinjuku Store, Men's Building 5th Floor, Men's Tailored Clothing

The refreshing light blue color gives a cool impression even during hot weather. The wide open collar is a classic open-collar shirt style, and despite being a solid color, it has a strong resort feel. (100% cotton)


Here are 3 foolproof outfit ideas to master the open-collar shirt look.


[Outfit 1] Jacket Style

Orian shirt: 29,700 yen

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De Petrillo suit: 178,200 yen
il micio bag ¥68,200 □ Isetan Shinjuku Store, Men's Building 5th Floor, Men's Tailored Clothing

CARMINA shoes ¥66,000 □ Isetan Shinjuku Store, Men's Building B1F, Men's Shoes

Pay attention to the material and color of your suit to create a chic look.


"When coordinating with a suit, the material of the suit is important. If your shirt is made of cotton or linen, choose a shirt made of the same material or a loosely woven fabric like hopsack. Avoid suits made of worsted wool or other smooth materials. Also, styling the shirt and suit in similar color tones creates a cohesive and chic impression. If you want to fully enjoy fashion, wear the collar out for a classic style. If you want a more understated look, you can still enjoy the relaxed feel of an open-collar shirt by wearing it with the collar down."


[Outfit 2] Slacks Style

Guy Rover shirt: 25,300 yen
INCOTEX Pants ¥48,400 □ Isetan Shinjuku Store, Men's Building 5th Floor, Men's Tailored Clothing

PARABOOT shoes ¥39,600 □ Isetan Shinjuku Store, Men's Building B1F, Men's Shoes

Pairing your shirt with pants in a color that doesn't clash with it is a great idea.


"Just like with a suit, the key is to match the shirt and pants in the same material, but when wearing it alone, pay particular attention to the color coordination with the pants. For shirts with strong colors or patterns, the trick is to pick up the shirt's color or pair it with pants in a neutral color like green or gray. Be careful not to let the contrast between the shirt and pants become too strong. If you're aiming for a more mature look, choose leather shoes."


[Outfit 3] Shorts Style


FINAMORE shirt: 34,100 yen

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GTA Pants ¥35,200 □ Isetan Shinjuku Store, Men's Building 5th Floor, Men's Tailored Clothing

MAGNANNI shoes ¥61,600 □ Isetan Shinjuku Store, Men's Building B1F, Men's Shoes

My top recommendation is Gurkha shorts that you can wear like a grown-up.


"Shorts styles, which expose the most skin, can easily look childish, but just like the two outfits mentioned earlier, there's nothing to be afraid of if you pay attention to the materials and color combinations. Gurkha shorts, in particular, can be worn in a way that gives a more mature impression despite being shorts, so I recommend having one pair in your summer wardrobe! Furthermore, since they expose a lot of skin, I also recommend wearing accessories."


Open-collar shirts, with their bold patterns, are often considered difficult to style, but by following the three outfits we've introduced here, you can easily achieve a sophisticated casual look for your day off.
Why not take this opportunity to get an open-collar shirt and fully enjoy this summer?

See our recommended open-collar shirts



Edited by: ISETANME'S net
Styling: Tsukasa Miyazaki (CODE)

*All prices include tax.
*The information in this article is current as of the time of publication. Product information may be revised or changed without notice.
*Regarding the information displayed, items that are only available in stores can be purchased through Mitsukoshi Isetan Remote Shopping. Click here for purchase instructions.

For inquiries, please contact Isetan Shinjuku Store, Men's Building 5th Floor, Men's Tailored Clothing, Tel: 03-3352-1111 (Main number)
For inquiries via email, please click here.