
When Ermenegildo Zegnarsquo;s sons Aldo and Angelo joined the company in 1942, it was renamed Ermenegildo Zegna and Sons. By 1955, the company employed 1,400 workers. Ermenegildo died in 1966 at the age of 74. Aldo and Angelo took over the business, and two years later they launched a line of ready-to-wear menrsquo;s suits produced in Zegnarsquo;s factory in Novara.

Another factory was opened in Spain in 1973 and Switzerland in 1977. As of 1999, the Zegna Group had eight manufacturing plants in Italy, two in Spain, three in Switzerland, one in Mexico and one in Turkey. While many Zegna suits are factory-produced, the majority of premium suits are still made-to-measure.

The first boutique was opened in Paris in 1980, followed by Milan in 1985. In 2010 their numbers had grown to 560 boutiques, of which over 300 are controlled by the company. Zegnarsquo;s flagship boutique locations are mostly found in the United States, Europe, Japan and China.
Aldo died in 2000; Angelo remains the honorary president of the company.
The first boutique was opened in Paris in 1980, followed by Milan in 1985. In 2010 their numbers had grown to 560 boutiques, of which over 300 are controlled by the company. Zegnarsquo;s flagship boutique locations are mostly found in the United States, Europe, Japan and China. Aldo died in 2000; Angelo remains the honorary president of the company.

Zegnarsquo;s range includes fabrics, suits, neckties, knitwear, shirts, accessories and sportswear. They have also branched out in other areas, for instance upholstering the interior of automobiles such as the Lancia Trevi Volumex in 1982, and a limited edition, sixth generation Maserati Quattroporte sedan.

Ermenegildo Zegna has a yearly output of over 2.3 million meters of fabric, 600,000 sleeve units suits, 1.6 million pieces of sportswear and 1.7 million textile accessories. Zegna employs over 7,000 workers worldwide. The export quota was more than 90% in 2010 divided equally between Europe, Americas and Asia.
As one of the biggest buyers of ultra-fine Merino wool, Ermenegildo Zegna has encouraged, supported and rewarded the efforts of the Australian wool industry since 1963 in the production of finer and softer wools.

In 2002 the Ermenegildo Zegna Vellus Aureum Trophy was launched for wool that is 13.9 micron and finer. Wool from Australia, New Zealand, Argentina and South Africa may be entered and a winner is named from each country.
In 2010 a soft ultra-fine, 10-micron fleece, from Windradeen, New South Wales set a new world record in the fineness of wool fleeces when it won the Ermenegildo Zegna Vellus Aureum Internati.

Most Zegna suits cost in the US$2,300–$6,500 range. Price is dependent upon several factors. Zegnarsquo;s top line is Couturer, formerly known as Napoli Couturer.

Ermenegildo Zegnarsquo;s Su Misura suits are Made-to-Measure and can be ordered in all Ermenegildo Zegna stores. The cost is typically 15-20% more than regular Ermenegildo Zegna suits, but the service provides clients a custom ordered suit detailed to his own specifications. Ermenegildo Zegnarsquo;s website stated, Ermenegildo Zegnarsquo;s Su Misura service makes it possible to produce tailor-made suits, jackets, trousers, coats, shirts, [and] ties in just a few weeks, respecting the clients size and needs, and maintaining the standards of quality for which Zegna is rightfully famousr.

On July 1, 2011, Ermenegildo Zegna signed a licensing agreement with Estée Lauder Companies Inc. for exclusive global rights to market fragrances and develop new cosmetics under the Ermenegildo Zegna Grouprsquo;s brands, thereby replacing the previous partnership with YSL Beauté.
In February , the Ermenegildo Zegna Group signed a ten-year licensing agreement for the manufacture of eyewear with the Marcolin Group.

Oscar-winning actor Adrien Brody advertised Zegnarsquo;s Spring/Summer 2003 and Fall/Winter 2003 lines. Model Ryan Burns was the face of the F/W 2012 campaign and the 2013 debut of the Uomo fragrance, as well as the summer 2015 launch of Acqua di Bergamotto fragrance. Irish actor Jamie Dornan modeled Ermenegildo Zegna Couture in 2013 for the linersquo;s Spring/Summer campaign. Sam Riley modeled its autumn/winter 2015 campaign. The F/W 14 Lookbook was modeled by Latvian Janis Ancens and South African Shaun De Wet. In Zegna commissioned Park Chan-wook to create a 4-part series of short films collectively titled A Rose Reborn starring Daniel Wu. The Couture S/S 2015 campaign was photographed by Inez van Lamsweerde and Vinoodh Matadin with art direction by Giovanni Bianco.
