While strolling the streets of Paris, Katy Perry gave us a street-cool ensemble that we can just as easily mimic on the sidewalks of our own cities. The singer started with a yellow snake-print sweater, which she paired with gray skinny jeans and a collarless gray coat. A rope and rhinestone necklace jazzed things up, and black booties completed her look. To re-create this fabulous gray-and-yellow outfit, wear a solid yellow cardigan — a sweater or T will do as well — with your gray skinnies and matching gray outerwear. Finish things off with a statement necklace, cool shades, and a badass strut.