18. Christina Aguilera
Band Or Solo Artist?: Solo
Genre: Pop, R&B
Greatest Hit: "Genie in a Bottle" (1999)
Christina Aguilera is one of the most vocally talented artists on our list; her range is phenomenal and while her start in pop music never gave her the opportunity to showcase that, her future works did. Nevertheless, her debut track "Genie In A Bottle" was so subliminally sexy that it launched the young, blonde teen into stardom.
Aguilera now sits as a judge on The Voice, and has been releasing music on and off for the past few years, including her newest album Lotus.