http://www.youtube.com/watch?v=7VZ-aoTDamc UPDATE --- 1/25/13
No, that's not Pearl.
Pearl is five months old.
Five-month-old infants don't stand on chairs, sway in rhythmic motion and deliberately hold their arms in the air like that. If you know of any who do, kindly let me know what they're ingesting, because my kids need some of that. They have choreography to learn.