After a week of Paris heat that felt personally targeted, Celine offered the rarest luxury of all: air conditioning. Inside the Tennis Club de Paris, in the 16th arrondissement, Michael Rider staged his first fully menswear runway show for the house – and suddenly, the Celine man felt less like an idea and more like a person you might actually want to follow out of the room. The set was clean, almost clinical: white scaffolding, white space, a feeling of something still being built.