Looking back at Marc Jacobs's catwalk shows, it's not hard to see how much he enjoys taking risks and changing things up. No two collections are ever the same — and whether it's through the use of exaggerated layers, futuristic shapes, nostalgic undertones, or feminine silhouettes, he always delivers an array of fresh, covetable pieces. We can trace Marc Jacobs's chameleon tendencies with just a glance at his two-plus decades worth of design, high-profile accolades, and side projects (read: Louis Vuitton). It's a wonder this man ever sleeps. Click through to see some of his most memorable looks from seasons past.