Cher Lloyd: 21 Under 21 (2012)

Cher Lloyd: 21 Under 21 (2012)

No. 8: Cher Lloyd

Birthdate: July 28, 1993 (Age 19)

Why She's Hot: Since establishing herself on the U.K. version of "The X Factor" in 2010-11, Cher Lloyd has slowly but surely taken her pop offerings to the States, while gaining more British 'Bratz' with each new hit. If "Swagger Jagger" and "With Ur Love" made the 19-year-old a fresh face to watch, U.S. Hot 100 hit "Want U Back" was the irresistible breakthrough. The U.K. release of her debut album "Sticks + Stones" was followed by an overseas tour earlier this year, and the album finally hits American stores this fall. Get ready to see a lot more of the most successful singing Cher since... well, you know.

Video Below: Cher Lloyd sings "Want U Back" at Billboard's Studios

Next: Porter Robinson