Unbuttoned: The Fashion Circus Is Coming. Here’s a Cheat’s Guide.

Advertisement The major designer debuts, the biggest bash and the questions to ask. Image Clockwise from top left, Riccardo Tisci; Victoria Beckham’s fall 2018 collection; Hedi Slimane; Ralph Lauren’s spring 2018 collection; a look from Mr. Slimane’s last collection for Saint Laurent; and Kate and Laura Mulleavy of Rodarte.CreditCreditClockwise from top left, Francois Mori/Associated Press;…