Everlane recently came out with a new backpack, the Modern Commuter, and it is seriously gorgeous. While I have two of their other bags (just call me the bag lady), this one takes the cake.
This bag is sleek, has a ton of room in it, but is still small and light enough to carry around every day, which I love. You can put your laptop in it, and it has a second space for papers or books, too. As a photographer, I have a lot of bags, but this one is super comfortable and allows me to go from work to play.