Teen singer Justin Bieber poses with his pre-haircut locks backstage at the 53rd annual Grammy Awards in Los Angeles, in February.
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Teen actor Zac Efron arrives at the ESPY Awards on July 16, 2008 in Los Angeles. He's appeared in all three High School Musical movies.
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The Jonas Brothers show off their teen hair at an Angelina Jolie campaign held in Hollywood, CA in Sept. 2010.
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Michael Jackson poses here on his 1982 album,Thriller.
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Elvis Presley is shown with his Gibson J-200 guitar in this 1957 MGM photo.
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Frank Sinatra is shown in a 1943 photo. The FBI opened its files Dec. 8, 1998 releasing more than 1,200 pages of documents on Sinatra.
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This 1972 photo shows singer, actor, songwriter, and teen idol David Cassidy. Cassidy played Keith Partridge in the muscial sitcom, The Partridge Family.
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Davy Jones, vocalist of The Monkees, a pop rock group and TV show that aired from 1966 to 1968. This photo was taken in January 1970.
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The Beatles pose in an unknown location, in this Feb. 28, 1968, photo. From left are Paul McCartney, John Lennon, Ringo Starr, and George Harrison.
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The Rolling Stones are shown during rehearsal on April 8, 1964 at an unknown location. The British band members, from left, are, Brian Jones, guitar; Bill Wyman, bass; Charlie Watts, drums; Mick Jagger, vocals; and Keith Richards, guitar.