DONNY and MARIE OSMOND joined their fellow siblings as the Osmond clan took over DisneyWorld in Orlando to celebrate their 50 years in show business as well as the 25th anniversary of the Children's Miracle Network, which they co-founded with actor JOHN SCHNEIDER.

"The Insider" was also backstage with the famous family as they prepared to take to the stage for a reunion concert in front of an enthusiastic crowd.