Coco Chanel, born Gabrielle Bonheur Chanel, 1883–1971, was a pioneering French fashion designer whose modernist philosophy, menswear-inspired fashions, and pursuit of expensive simplicity made her an important figure in 20th-century fashion.

She established a millinery shop in Deauville in 1909, founded her first house of couture there in 1913, and opened in Paris in 1914. An enormously influential designer from the mid-1920s on, she was noted for her simple, elegant modern styles: jersey dresses, especially the “little black dress,” and suits; perfumes, notably Chanel No. 5, created in 1922; black or gray pullovers with white piqué collars and cuffs; boxy, braid-trimmed suits; trousers for women; and clothing generally designed for comfort.

Among the most imitated of all designers she had a major resurgence of popularity beginning in 1954, when she reopened the business she had closed (1930) at the beginning of World War II. Her fashion empire ranged from Chanel suits and quilted handbags with chains to costume jewelry and a textile house.

Her extraordinary influence on fashion was such that she was the only person in the field to be named on “Time 100: The Most Important People of the Century”. Her elegant but simple fashions are timeless and favored by many women, myself included.

Source: Wikipedia
And thanks to Sean Fox for the research!