The seventies ruled the Spring runways—the Yves Saint Laurent seventies, to be exact. "YSL, you know, my usual fave," Marc Jacobs said backstage, name-checking the inspiration for his gleeful, glam ode to the decade. With last year's hugely successful Saint Laurent retrospective at Paris' Musée des Beaux-Arts, Jacobs wasn't the only one riffing on peasant blouses, safari jackets, vibrant colors, and other elements of the master's oeuvre. See Gucci, Emilio Pucci, and, mais bien sûr, Stefano Pilati's own tribute to the house that Yves built.

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1. Hyper Color
2. Lace Embrace
3. Midi Is the Message
4. Prints Revolution
5. Seeing the Light
6. The Yves Standard
7. We Wear the Pants