Office Casual & Conservative Style Brands in Tokyo

Workwear is not just a uniform anymore. In Japan, there are still many situations where “looking proper” is required, such as sales, client meetings, or ceremonies. What matters now is how to combine that sense of neatness with individuality. By exploring department stores and station buildings in Tokyo, you can find brands that suit your career stage.

Why suits are still expected

Even though office casual has become common overseas, in Japan there is still a strong belief that “neatness equals trust.” Especially in external meetings or presentations, a jacket or set-up is the safest choice. This is why the Japanese office style is still balancing between formal and casual.

Recommended for newcomers and juniors

NATURAL BEAUTY BASIC

Clean and simple, with a slight feminine touch. It is often chosen for the first commuting clothes because it looks proper without being flashy. The lineup is easy to understand with “on style” for jackets and “off style” for knits and dresses. Sizes are mainly S, M, and L, with some items in XS. A safe but not boring choice for women in their early 20s.

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PLST

Known as the sister brand of Theory, PLST adds edge to “everyday wear.” The biggest strength is the set-up items. Stretch materials and wrinkle resistance keep you comfortable all day. Available in sizes XS–L, easy to adjust to different body shapes. The price is mid-range, but quality and tailoring make it cost-effective.

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Aoyama & AOKI

The standard of mass-market suit chains. Their strength is the nationwide reach — you can buy near your local station. Separating top and bottom sizes is possible, and they cover XS–XXL. Features like washable fabric and shape-memory processing make them practical for daily wear. They are especially strong in recruit suits and newcomer sets.

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Recommended for career women

INDIVI

With the theme “RICH MODE,” INDIVI offers a sharp and urban look. Jacket cutting often highlights the waistline, upgrading the whole style. Sizes range from XXXS to 5L, which is rare among Japanese brands. Larger sizes are offered under “INDIVI L,” and smaller sizes under “INDIVI S.” Reliable as a department store career brand.

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ICB

An Onward career brand with a strong focus on jackets. The shoulders and lapels are beautifully made, giving a dignified impression. The concept is “Live your self.” It appeals to women who value their own style over trends. Sizes are mainly 0–6 (equivalent to XS–L). Larger sizes are covered by “ICB L” in L and XL. Known for effortless styles that work both on and off duty.

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UNTITLED

A representative department store brand. With the message “The Body Is Your Canvas,” it offers a total lineup from suits and dresses to casual wear. The sense of security comes from being able to complete both on and off styles within one brand. Sizes are XXS–6L, with Tall and Large lines as well. It is also strong in ceremony wear and trusted by many adult women.

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Where to shop in Tokyo

Shinjuku area

• Shinjuku Takashimaya: ICB, UNTITLED, INDIVI (large sizes also)
• Keio Department Store Shinjuku: UNTITLED
• PLST Shinjuku Main Store / Keio Store
• Aoyama Shinjuku West Exit Store

Ikebukuro area

• Tobu Department Store: ICB, UNTITLED, INDIVI (large sizes also)
• Lumine Ikebukuro: NATURAL BEAUTY BASIC
• PLST Tobu Ikebukuro
• Aoyama Ikebukuro East Exit Main Store

Ginza & Yurakucho area

• Yurakucho Marui: PLST, INDIVI, NBB
• Matsuya Ginza: UNTITLED Salon
• N. NATURAL BEAUTY BASIC: Ginza INZ

Shibuya focuses more on trend brands, so conservative office wear brands are limited there.

Useful Japanese phrases for shopping

• Can I try this on? — Shichaku shitemo ii desu ka?
• Do you have this in size M? — M saizu arimasu ka?
• Do you have a shorter length? — Mō sukoshi mijikai take wa arimasu ka?

Asking staff in the fitting room is part of the Japanese shopping experience.

Updating your office style

Newcomers should focus on cleanliness and versatility. Career women should focus on quality and wide size options. Exploring Tokyo’s department stores and station buildings turns office fashion into more than just clothing — it becomes a partner that reflects your career.

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