Last year, Karl Lagerfeld revealed his deep-rooted obsession with diet drinks by designing a limited-edition bottle for Coca Cola Light in France. And now a highly-caffeinated and super skinny Karl is at it again with three exclusive new creations for his beloved Diet Coke. He's also the force behind a DC ad campaign featuring Coco Rocha, Heidi Mount, and Jeneil Williams. The artistic bottles will be available individually or in a special collector's box set in June. We're so excited — we can almost taste it!