In the game of fashion musical chairs, few moves have had the electrifying effect of Hedi Slimane’s return to Saint Laurent. The designer seems to have dusted off the French label overnight, injecting it with the same youth serum that made his seven-year tenure at Dior Homme so riveting. Cue a wardrobe of streamlined silhouettes imbued with Slimane’s permanent fixations: punk-rock music and the disaffected. This spring, his irreverent take on menswear reverberates across multiple rockabilly-style collections. There’s a bit of Brando’s biker gear from The Wild One, a nod to a sexualized young Elvis, touches of Teddy Boy dandyism, and sprinkles of glam rock. Consider it a new cause for a new kind of rebel.