Supermodel Karlie Kloss was spotted effortlessly hailing a cab- perfecting that "Model Off Duty" look everyone loves to recreate. We loved how Karlie paid homage to the iconic Cindy Crawford (see sweatshirt), but we also loved her bag of choice. The Mansur Gavriel backpack, retailing at $845, is a gorgeous leather backpack, focusing on simplicity and style. Celebrities and influencers around the world seem to love the practicality just as much as we do, as the bag is completely sold out online. HBD101 has got your back (ha!) with some backpack options right here...You can thank us later.