Before Gossip Girl: See Blake Lively at Her High School Prom! (VIDEO) Tweet November 10, 2012 at 06:09PM EST by Whitney Ricketts Related: Gossip Girl, Relationships , Blake Lively Credit: YouTube Before she became a multi-millionaire, Mrs. Ryan Reynolds, and princess of our hearts, Blake Lively was just a girl excited about her high school prom. Check out this years-old video of Blake greeting her boyfriend right before the big dance.