Sometimes Instagram is the best. Nine times out of 10, that's due to the plethora of fluffy dog and cat photos available at the swipe of a finger. (A milestone for humanity that I think is truly underappreciated.) But sometimes, we heart Instagram because it enables us to peek in on celebrities and their daily lives. For instance, Reese Witherspoon posted a #TBT shot of herself on the set of Sweet Home Alabama. Cute, but the interesting bit lies in the comments section of her picture.