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!

December 2: Today is the birthday of Britney Spears. This music star has been in the game since Disney's "The New Mickey Mouse Club," and is still making hits today.

Britney Spears turns 29 years old today. So Happy Birthday Britney!

Today's video of the day is from Britney Spears' "Circus" album. Enjoy the video!