Happy 31st birthday, Xtina! Christina Aguilera was born Dec. 18, 1980 in Staten Island, N.Y. to mother Shelly Lorraine and father Fausto Wagner Xavier Aguilera. 2011 was a bit of a rollercoaster year for Aguilera, who came under fire for a Super Bowl flub, as well as her weight (she looks fine to us!) and her dropping sales. Her first film 'Burlesque' underwhelmed at the box office, and her most recent album 'Bionic' wasn't the smash hit that we've grown used to from the superstar. However, Aguilera did find a niche where she fit perfectly -- becoming a mentor on 'The Voice.' Her work with the NBC hit eventually led her to duet with fellow judge Adam Levine and Maroon 5 on 'Moves Like Jagger,' which shot to No. 1 on the charts without delay. Aguilera has met with voice coaches of her own to prep for her next album, and we can't wait to hear what she has in store. To celebrate Aguilera's big day, here are 10 things you may not know about Cee Lo Green's favorite diva.

  • 10

    She doesn't hold grudges.

    Good Charlotte mentioned her in their song 'Riot Girl' off their 2002 album 'The Young & the Hopeless,' singing, "Christina / Wouldn't wanna meet her." Later, Aguilera would give birth down the hall from lead singer Joel Madden's now wife, Nicole Richie, and become one of her closest friends. Additionally, Eminem defamed Aguilera in his hit 'The Real Slim Shady,' but reports surfaced that the pair may actually collaborate on a track soon.

  • 9

    Aguilera: singer, songwriter, actress ... inventor?

    IMDB reports that Aguilera "has asked the US Patent and Trademark Office to approve over 450 items. Among the list are lingerie, crayons, skiwear, ropes and handcuffs." There's that 'Dirrty' girl again!

  • 8

    She's apparently very health conscious.

    Aguilera was very displeased when someone coughed during an interview promoting her last album, 'Bionic.'

  • 7

    Sex clearly sells for Aguilera.

    Her video for 'Dirrty' received a lot of flak for how, well, dirty it was (Aguilera herself said it was "all about the stank" -- ew!), but nonetheless, Rolling Stone reports that it's still the most-played video of all time.

  • 6

    Not only does Aguilera pen most of her own songs, but she contributes for other divas as well.

    She co-wrote 'American Idol' winner Kelly Clarkson's hit single, 'Miss Independent.'

  • 5

    Rolling Stone named Aguilera No. 58 on their list of the 100 Greatest Singers of All Time.

    She is the youngest performer on the list. The magazine praised her four-octave range, saying she "has had the finesse and power of a blues queen ever since she was a child star."

  • 4

    Even before appearing on the 'Mickey Mouse Club' with Justin Timberlake and Britney Spears, Aguilera wowed audiences.

    At a Pittsburgh charity banquet, an 11-year-old Aguilera performed so well that she received offers to sing the national anthem for the Pittsburgh Penguins, Pirates and Steelers. IMDB reports that Aguilera became the youngest person at the time to perform at a national sports event.

  • 3

    Music will always come first for Xtina.

    Aguilera made her movie debut alongside Cher in 'Burlesque,' but turned down other film offers to focus on her albums. When Aguilera turned down the musical ensemble 'Nine' to record 'Bionic,' and her role went to Kate Hudson.

  • 2

    While she is proud of all of her work, that doesn't mean she wants the world to hear all of it.

    In 2001, Aguilera filed a lawsuit against Warlock Records for improper use of her name and license on their release 'Just Be Free.' The album featured demo songs Aguilera recorded when she was merely 14 years old. MTV reports that her attorney claimed the early recordings were "not the quality she is associated with right now" and that the label was "trying to boot strap on the success of Christina Aguilera."

  • 1

    If red lipstick didn't exist, there would be no more Christina Aguilera albums.

    The chanteuse told the New York Times, "For me the visual is just as important as the music. I would never record without my red lipstick. It was my way of getting into character, sort of like Method singing.”

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