Best of 2007
21 & Under: Hottest Breakout Stars
Zac! Rihanna! Shia! Lauren! These kids aren't only the most popular, they're also the most likely to get bigger in '08. By Aaron Parsley
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THE BOMBSHELL
No one was caught without an "'ella, 'ella, 'ella" this summer thanks to the season's catchiest song, Rihanna's "Umbrella." And while artists as diverse as Mandy Moore and My Chemical Romance covered the sexy hit, the ubiquitous Barbadian beauty and VMA winner, 19, became a Cover Girl herself, modeling for the makeup line.
