Obsession €¦. not by Calvin Klein. This is Obsession, by Zac Posen. I just love his Spring 2008 handbag assortment. This wunderkind (I mean he's at the helm of a fabulous fashion empire €“ ready-to-wear, accessories, perfume, yada yada, and P. Diddy is one of his biggest $upporters) really knows how to make a woman feel elegant and classy without feeling doughty and austere. Now that he's taken that aesthetic to the bag world, it's no wonder Hollywood A-listers like Rachel Bilson and Beyoncé can't get enough of his vintage-inspired designs. Click READ MORE to find out which bag is the reason for my obsession!