Celine designer Hedi Slimane sent out a lineup of bare-chested models in sheer, unzipped tops and dazzling blazers on Sunday, marking the return of the French label to Paris Fashion Week’s men’s wear shows — and closing the week of events.

Leggy and long-haired, they marched down a wide runway in sunglasses, hands thrust in front pockets, as spotlights blinked.

From sequin-embellished shirts to low-cut, skin-hugging pants and a shimmery crocodile blazer, Celine’s summer runway presentation was crammed with clothes imbued with an androgynous rock spirit, à la David Bowie...