Transformation Tuesday - Serena Lu competes at the 2012 and 2015 USA Gymnastics Championshipsbr br SUBSCRIBE to the USA Gymnastics YouTube Channel: br You can check out all event PLAYLISTS here: br Follow USA Gymnastics on Social Media:br br - Facebook: - Twitter: - Instagram: br Visit our website: br USA Gymnastics News: br USA Gymnasts and Teams: br Full List of USA Gymnastics Events: br Check Out the USA Gymnastics Photo Album: br Learn about USA Gymnastics University: