Last month, Kristin Cavallari—who is currently working on or perhaps at least pondering in a casual way her debut book Balancing on Heels, which is due out in 474 days—revealed that she can look skinny, but she doesn't like that look." I can look really skinny, and I don't like that look," she told E! News. "So, yes, I'm drinking protein shakes, I'm trying to put on muscle and I'm lifting very heavy weight right now."