Guy Laroche

A historically casual-oriented line documented in public records around 1990 as G. Laroche Sportswear. Competition authority documents list it among production brands alongside G. Laroche diffusion and G. Laroche boutique, and physical labels also show the name Guy Laroche Sportswear. Separate from the current collections on the official website, it covered everyday wear and sports-oriented offerings.

Following the 1966 launch of men's ready-to-wear and the opening of the Guy Laroche Monsieur boutique, later materials also classify it as one of Guy Laroche's main divisions. Separate from the main womenswear line, it is responsible for a menswear wardrobe centered on suits and tailoring, and is included among the menswear brands in 2024 corporate materials.

A ready-to-wear diffusion line introduced in 1974 in partnership with Bic, building on the first ready-to-wear expansion in 1961. It served to bring the expression of the main line, rooted in haute couture, to a broader ready-to-wear market, and official materials record it as one of the production brands under the name G. Laroche diffusion. Distinct from the menswear division and perfumes, it is positioned as reflecting the history of the expansion into ready-to-wear.

In 2024 business materials and Thai brand listings, a derivative name appears alongside Guy Laroche as a menswear brand. The name combines the parent brand name and is operated as a men’s brand within licensed distribution, separately from the main Guy Laroche line. It remains identifiable in corporate materials.