Christina Aguilera: 'Bionic' Is My Baby

Christina Aguilera is back with her new album Bionic and a movie Burlesque, four years after she stepped out of the spotlight, so is she now planning to expand her family?

"Bionic is definitely my baby at the moment," Christina tells Entertainment Tonight. "Eventually, in the future, I do want to expand on my family and have another one, but for now, Bionic is the baby and Burlesque is the other baby."

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Despite the sexually-charged content of her new music, Christina cites a surprising source of inspiration.

"I couldn't be happier about … the fact that the album's inspired by my son, and the future, and the feeling of the movement of electronica music, in a sense," says Christina, "but still maintaining that rawness of having those definite ballads that evoke that pure, honest emotion."

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She adds: "Being able to just pour my heart out into the beauty and emotion of a song is very important to me."

Christina explains why she stepped away from the spotlight for so long: "The first year we spent touring, getting pregnant, living that out, becoming a mother, taking the first year to sort of do the mom thing, feel what that's really like, and then be inspired for my new record. Then I accepted the movie Burlesque, and that was almost a year away from the public eye."

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Christina stars opposite Cher, Kristen Bell, Eric Dane, Alan Cumming, Julianne Hough and more in the upcoming big-screen musical and she says of the Burlesque experience, "acting is a completely different animal, but it definitely is something — it gave me a lot of tools to now use in my world of music."

Meanwhile, when she goes home at night after work, she gives all her attention to her two-year-old son Max with hubby Jordan Bratman.

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"I sing my son to sleep with Mary Poppins songs," she says, "and rock and cradle him and cover him up in bed and do really silly things that we won't even mention."