Today's Teen Stars: Who's Their Past Twin? (PHOTOS)
Much like comets that are only visible every 20 or 30 years, teen idols burn bright but fade fast.
However, they come back for the next generation of teen fans to enjoy, albeit in a different form. If you take a close look, Donny Osmond ultimately influenced Justin Bieber, John Travolta became Zac Efron, and Danny Bonaduce was born again as Rupert Grint. And the circle of fame continues ...
Which of yesterday's favorites is most like the stars of today? Tell us what you think of our match ups in the comments section.