1976-1983 Giorgio Armani.
During the seventies, this collaboration led Allegri to stardom, highly positioning the brand at international levels. Allegri assumes a leading role in the sportswear market. In order to reinsure this role, Allegri adopted the logo "by Giorgio Armani", confirming Italian design as a style distinction. Some of the unforgettable creations of this collaboration include models known as "Oslo" and "Ligustro", which introduced raglan sleeves in sportswear.

1988-1991 Romeo Gigli
Allegri invited Romeo Gigli to collaborate on its women's collection. His minimalist style, with restrained volumes, reinvents shapes and colors, creating products that are now Allegri classics. Allegri, always ahead of time, increases such collaboration with co-brands that add to the team names such as Moschino, Katherine Hamnet and Kansai Yamamoto, always under the supervision of Romeo Gigli.

1992-1998 Massimo Osti
Allegri reinforced its collaboration with Massimo Osti, a textile researcher, creating the brand "Left Hand", which came in a unique color and always made of the same fabric. Its industrial project consolidates itself with the creation, in 1992, of the holding Dismi 92 (Diffusione Sviluppo Moda Italiana) S.p.A., owner of all brands, products and their distribution.

1993-1998 Martin Margela
Allegri started collaboration with Martin Margela for man and woman collections.

2005-2008 Viktor & Rolf
In order to keep improving design levels, the brand invited the Dutch duo Viktor & Rolf. Their extraordinary creative vocation led to the development of singular products, exercising innovation in shapes once again as well as prints and finishing.