Donny Osmond knows more than a thing or two about dealing with fame, given his more than 50 years in showbiz. The 62-year-old musician is opening up about how growing up in the spotlight can kickstart loneliness at a young age -- something Justin Bieber croons about in one of his latest songs, "Lonely." Osmond and his famous family grew to notoriety in the 1970s, performing on a variety of shows as a musical performance group.