Fergie's high-powered wail and forward-thinking approach to pop made her the not-so-secret weapon of The Black Eyed Peas. Her hooks sweetened tracks like the blippy “Just Can't Get Enough”, while her willingness to flaunt her assets (and rap chops) turned “My Humps” into a phenomenon. Going solo allowed her to push herself even further. While flipping dusty 45s into new-millennium platinum on tracks like the hiccuping “Clumsy”, and revealing her sensitive side on power ballads like “Big Girls Don't Cry (Personal)”, she established herself as a formidable force on her own.