He died at the Renaissance chateau near Paris that he shared with his partner and fellow designer Philippe Venet. His company released a statement Morning confirming his death.
Givenchy sold his namesake label to LVMH Moët Hennessy Louis Vuitton in 1988 for $45 million.
He said, "It is with huge sadness that we inform you that Hubert Taffin de Givenchy has died".
Long before Givenchy was a go-to red carpet fashion and beauty house for celebs like Kim Kardashian, Beyonce and Cate Blanchett, the French couturier and nobleman founded his eponymous label in postwar Paris to cater to well-to-do women.
Celebrities who clamored for "the Audrey look" included actress Elizabeth Taylor, Princess Grace of Monaco and Jacqueline Kennedy Onassis. "Givenchy's lovely simple clothes [gave me] the feeling of being whoever I played...", Hepburn previously said of the designer. "He is far more than a couturier; he is a creator of personality".
With typical discretion, Givenchy made no comment, only that he had not been consulted about the appointments. He credited Spanish designer Cristobal Balenciaga, his mentor, with inspiring this aesthetic. He said Givenchy died in his sleep on Saturday, The Local reported.
Givenchy was born into a French noble family and was supposed to do law.
Designer Hubert de Givenchy, pictured with the model Iman in 2002, was a giant of French fashion. In 1945, Givenchy left his home in Paris to enter the prestigious École des Beaux-Arts in Paris in 1945 at the age of 17.
Headquartered in a small room off the Parc Monceau, well off Paris' famed Golden Triangle, the house of Givenchy proved an instant success. Givenchy declined, citing a mid-collection workload, but gravitated toward Hepburn, "inspired by her youth, gamine look, and elegant spirit", according to the Fashion Institute of Technology Museum in NY. He remained head of creative design for seven years before retiring in 1995, reports Elle UK. Starting in 2005, under Tisci, LVMH scaled the fashion house into a global brand, adding more than 60 stores.
In his 40-year career, Givenchy was known for his Parisian twist on American clothing.