The mood on the catwalk was buoyant in the French capital as Olympic fever swept the city and designers celebrated unity and optimism

Luxury brand’s studio team turn to timeless tweeds and neat silhouettes in first show since Virginie Viard’s sudden exit

There were 12 boucle-tweed suits, in colours from pistachio to raspberry. There were endless swishy blond ponytails tied with black silk bows, and a clatter of satin Mary Jane shoes with pearled heels. There were Hollywood faces – Keira Knightley and Michelle Williams – in the front row of the Palais Garnier opera house in Paris, countless quilted-flap 2.55 handbags in the front row and a finale bridal gown with a sweeping ivory silk train.

But one crucial thing was missing from this season’s Chanel haute couture show: a designer to take a bow. Since the sudden exit this month of the designer Virginie Viard, who had led Chanel since the death of Karl Lagerfeld five years ago, this mighty luxury brand, worth an estimated £15.5bn ($19.7bn), is headless. The vacancy for fashion’s top job is the talk of Paris fashion week.

Stars turned out for the Vogue World event celebrating fashion and sports, at Place Vendôme in Paris, a month before the city hosts the Olympics