Nicole Richie's daughter Harlow turned 13 yesterday, and she commemorated her eldest entering the teen years by throwing it back to her infant years. Richie wrote, "Nothing is better than watching you become the young woman you are. I am so lucky I get to be your mom," along with a quick zing about how much time the teen spends on her cell phone. Classic! Also, can we join in that "Grey's Anatomy" watch party?