19. Nicole Scherzinger
Nicole and the Pussycats are like LeBron and the Cavs, back when they sucked. In short: a one-woman team. Her solo career is still in the "up and coming" category, but maybe Nicole should take a lesson from Bron—get some better teammates, ma!
DECADE ACHIEVEMENT: She's sold millions of records with the Pussycat dolls, but her real come up, besides being a Complex cover girl, was getting a hosting gig on the U.S. version of The X-Factor.