Perm url with updates: http://xahlee.org/funny/womanizer.html
“Britney Spears - Womanizer - Parody” by “VenetianPrincess”.
Who's this VenetianPrincess? Apparantly, a real chick that rose to fame on youtube. Dubbed “Female Weird Al Yankovic”, and is the most subscribed female on YouTube. She made several parodies that are highly popular. Her real name seems to be Jodie-Amy Rivera. Her website is vprincess.com.
See also White and Nerdy.
and the original version by Britney Spears.