Snaking traffic, screaming crowds, and a crush of photographers descended on the Grand Palais on Tuesday as Chanel unveiled its latest show before Matthieu Blazy’s debut as creative director in fall.

With glossy black rose-shaped buttons running down the center, the boxy, cropped piece was a mix between a cardigan and a traditional Chanel suit jacket. The La Vie en Rose star wore the knit set with ...

This isn’t only because of its rich history of Parisian elegance—demonstrated in Gabrielle Chanel’s now-classic boxy tweed jackets and little black dresses—but because of the way it has ...