70 years of Dior: stars come out to celebrate in Paris

Jennifer Lawrence attends the Christian Dior Haute Couture Fall/Winter 2017-2018 show as part of Haute Couture Paris Fashion Week on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

Gemma Arterton attends the Christian Dior Haute Couture Fall/Winter 2017-2018 show as part of Haute Couture Paris Fashion Week on July 3, 2017 in Paris, France. (Photo by Victor Boyko/Getty Images for Christian Dior)

Celine Dion and Anna Wintour attend the Christian Dior Haute Couture Fall/Winter 2017-2018 show as part of Haute Couture Paris Fashion Week on July 3, 2017 in Paris, France. (Photo by Victor Boyko/Getty Images for Christian Dior)

Jennifer Lawrence attends the Christian Dior Haute Couture Fall/Winter 2017-2018 show as part of Haute Couture Paris Fashion Week on July 3, 2017 in Paris, France. (Photo by Victor Boyko/Getty Images for Christian Dior)

Elizabeth Olsen attends the Christian Dior Haute Couture Fall/Winter 2017-2018 show as part of Haute Couture Paris Fashion Week on July 3, 2017 in Paris, France. (Photo by Victor Boyko/Getty Images for Christian Dior)

US model Karlie Kloss arrives before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / --/AFP/Getty Images

Canadian singer Celine Dion arrives before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / --/AFP/Getty Images

US actress Elizabeth Olsen arrive before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / --/AFP/Getty Images

Canadian model Winnie Harlow arrives before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / --/AFP/Getty Images

British actress Gemma Arterton arrives before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / --/AFP/Getty Images

US and Israeli actress Natalie Portman poses as she arrives for the opening of the Dior exhibition that celebrates the seventieth anniversary of the Christian Dior fashion house on July 3, 2017 in Paris

US model Bella Hadid poses as she arrives for the opening of the Dior exhibition that celebrates the seventieth anniversary of the Christian Dior fashion house on July 3, 2017 in Paris

British model and actress Cara Delevingne poses while arriving for the opening of the Dior exhibition that celebrates the seventieth anniversary of the Christian Dior fashion house on July 3, 2017 in Paris

US actress Jennifer Lawrence poses as she arrives for the opening of the Dior exhibition that celebrates the seventieth anniversary of the Christian Dior fashion house on July 3, 2017 in Paris

US model Bella Hadid poses as she arrives for the opening of the Dior exhibition that celebrates the seventieth anniversary of the Christian Dior fashion house on July 3, 2017 in Paris

British actor Robert Pattinson poses during the Dior exhibition that celebrates the seventieth anniversary of the Christian Dior fashion house on July 3, 2017 in Paris

French model and actress Laetitia Casta poses during the Dior exhibition that celebrates the seventieth anniversary of the Christian Dior fashion house on July 3, 2017 in Paris

US actress Jennifer Lawrence poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

US-Israeli actress Natalie Portman poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

US actress Kirsten Dunst poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

Canadian model Winnie Harlow poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

Italian model Tina Kunakey poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

Canadian singer Celine Dion poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

Brazilian actress Bianca Brandolini poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

US model Karlie Kloss poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

British actress Gemma Arterton poses during the photocall before Christian Dior 2017 fall/winter Haute Couture collection show in Paris on July 3, 2017. / AFP PHOTO / Patrick KOVARIKPATRICK KOVARIK/AFP/Getty Images

Elizabeth Olsen attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

A guest and Karlie Kloss attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Francois Durand/Getty Images for Christian Dior)

Karlie Kloss attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Francois Durand/Getty Images for Christian Dior)

Sofia Sanchez de Betak attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

Elizabeth Olsen attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

Eva Herzigova attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

Helena Bordon attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

Chiara Ferragni attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

Karlie Kloss attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Francois Durand/Getty Images for Christian Dior)

Cara Delevigne attends 'Christian Dior, couturier du reve' Exhibition Launch celebrating 70 years of creation at Musee Des Arts Decoratifs on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)

Jennifer Lawrence attends the Christian Dior Haute Couture Fall/Winter 2017-2018 show as part of Haute Couture Paris Fashion Week on July 3, 2017 in Paris, France. (Photo by Pascal Le Segretain/Getty Images for Christian Dior)