8 October 2026International edition
Vol. I · No.
8 October 2026
AI in Fashion
DAILY
The daily briefing on AI in the fashion business
Where fashion meets artificial intelligence.
Premium and contemporary

Theory

Fast Retailing · United States

Theory is a New York contemporary fashion brand founded in 1997 by Andrew Rosen and Elie Tahari and known for minimalist tailoring and workwear. It has been a wholly owned subsidiary of Fast Retailing, the Japanese parent of Uniqlo, since 2009.

Facts
Founded1997, New York
FoundersAndrew Rosen, Elie Tahari
OwnerFast Retailing (wholly owned since 2009)
Headquarters2 Gansevoort Street, New York
SegmentPremium contemporary
Websitetheory.com
Segment
Premium
Categories
WomenswearMenswearAccessoriesFootwear
Sales channels
Own storesDepartment storesE-commerceFranchise

What is Theory?

Theory is an American fashion brand for women and men that focuses on clean, modern tailoring, technical suiting and minimalist wardrobe staples. The brand says its garments are developed at a design and innovation centre in New York's Meatpacking District, using fabrics from mills around the world.

History

Theory was launched in New York in December 1997 by Andrew Rosen and Elie Tahari, starting with stretch trousers for women. In 2003 the Japanese company Link International acquired a majority stake; Fast Retailing, the parent of Uniqlo, already held a significant stake in Link. Link Theory Holdings later went public in Japan, and in 2009 Fast Retailing acquired the remaining shares, making Theory a wholly owned subsidiary. Handbags and shoes for women were added from 2003.

Products and positioning

Theory sits in the premium contemporary segment with a focus on fit and fabric. Key categories include:

  • Suits, blazers and tailored trousers for women and men
  • Knitwear and cashmere
  • Dresses, shirts and outerwear
  • Shoes, bags, belts and other accessories

Business model and distribution

Theory sells through its own stores and outlets, department store partners, theory.com and a mobile app, with international online orders handled through a cross-border partner. Published figures from 2021 cite 434 locations, with a strong presence in Japan and Asia through Fast Retailing's network alongside the United States. The brand's headquarters and flagship are at 2 Gansevoort Street in New York.

Why it matters

Theory is the premium anchor of Fast Retailing's portfolio, giving the Uniqlo owner a foothold in contemporary American fashion. It is often cited as a reference point for modern workwear, and its long ownership by a Japanese group shows how Asian retailers have invested in Western premium brands.

Frequently asked questions

Who owns Theory?

Theory is owned by Fast Retailing, the Japanese group behind Uniqlo and GU. It has been a wholly owned subsidiary since 2009.

Is Theory a luxury brand?

Theory is generally classed as a premium or contemporary brand rather than a luxury house. It is known for high-quality tailoring at prices below designer labels.

Fast Retailing: all brands
All brands