Supermodel and Victoria's Secret angel Miranda Kerr says she will conduct a free yoga class if 500 people upload an "I Will If You Will" video on YouTube, which is a pledge to observe Earth Hour. Miranda doesn't specify where the yoga class will be broadcasted, but according to this article, it will probably be on YouTube. Join Earth Hour by turning your lights off on at 8:30 PM on March 31, 2012. To learn more, watch the video below.
(Screencap via YouTube)