Happy National Read a Book Day! In honor of the day, we're taking a look at the celebrities who love books and which ones they've been snapped with their nose in. Violet Affleck has happily toted a book while running errands with her mom Jennifer Garner, and Bradley Cooper brought one along for a park date. Jennifer Lawrence and Nicholas Hoult got in a bit of reading while relaxing in a park and Sarah Jessica Parker took her reading material on the go. Click through to see which stars love their books. And hopefully you can fit in some reading too on Read a Book Day!