No. 20: Cody Simpson
Birthday: January 11, 1997 (age 13)
Why He's Hot: If you're looking for the next teen pop heartthrob with a great haircut and international cache, Cody Simpson's your man. The 13-year-old Australian joined the fray this summer with "iYiYiYi," an ultra-catchy debut single featuring Flo Rida , and his debut album for Atlantic Records is now in the works. Comparisons to Justin Bieber  are inevitable, but Simpson doesn't mind following in said star's footsteps: "Being compared to someone who's already been really successful is flattering," the singer recently told Radio Disney. How's that for showbiz smarts?
Video Below: Cody's take on Ben Harper's "Steal My Kisses" for Billboard's Mashup Mondays 
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