Peplum Vest: YSL
Cage Belt: YSL
Leather Skirt: Zara
Pumps: YSL (I know I'm getting boring here, but once again they were the best shoes for the outfit--see how the blue sole matches the vest?)
Don't let leather's bad girl reputation scare you: leather can be chic and professional, too. A myriad of leather incarnations appeared on the runway for fall: jackets, bustiers, skirts, vests, pants/leggings, shorts, and of course, accessories (just scroll through the runway shows at YSL, Prada, and Alexander Wang for proof).
I couldn't resist this leather pencil skirt at Zara (score!), which fit me and my wallet perfectly.