Justin Bieber helps a family with a tragic past in need of a new house on Extreme Makeover Home Edition

By DAILY MAIL REPORTER Helping hand: Justin Bieber stars in an episode of Extreme Makeover: Home Edition, pictured here with Katrina who lost her sister in a car accident last yearHe is one of the youngest millionaire musicians in the world. But Justin Bieber already knows how to put his superstar status to good use. The 16-year-old pop star made an appearance on this week's episode of Extreme ...