Very happy 30th birthday greetings go out to Christina Aguilera, who reaches that milestone tomorrow, December 18th. Christina's fourth English-language studio album of new songs, "Bionic," was released earlier this year, and she's out promoting the film in which she has made her feature debut, "Burlesque."

Today's video of the day is "What A Girl Wants." Enjoy!

For more Christina Aguilera, visit http://www.christinaaguilera.com