Beginning with a stint on Disney’s Mickey Mouse Club TV show way back in 1993, when she was only 13 years old, it seems like Christina Aguilera has always been a superstar. 1999′s self titled album spawned three hit singles including the pop classic ‘Genie In A Bottle’, and since then Christina has racked up an impressive 50 million record sales worldwide, making her one of the biggest selling artists of all time, and is the second biggest selling single artist of the last decade behind Madonna.