Mona Lisa (15)

Spears is credited as "Mona Lisa" in the music video for her 2005 single "Do Somethin'", as she said "I kinda think she's like my alter ego whenever I feel like being mean or possibly like bustin' people around to get stuff right ... It's kinda easier to be called 'Mona Lisa' instead of Britney".
The music video was co-directed by Billie Woodruff and Spears (who makes her directorial debut), and is credited as her alter ego "Mona Lisa", a reference to her alter ego from the song of the same name and from the scrapped Original Doll album.