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Christina Aguilera's debut album turns 15 this year.

"Genie in a Bottle" wasn't the only hit song from 1999, though — see 14 other albums that came out 15 years ago.

Read More Christina AguileraMary-Kate OlsenAshley OlsenBritney SpearsSarah Jessica ParkerFriendsGrey's AnatomyNostalgia
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