Christina Aguilera credits her son with inspiring her new album, insisting motherhood has completely changed her musical style. The singer's fourth album, Biopic, hits stores in March - and Aguilera warns fans to expect a different sound from her previous recordings.

Aguilera, who gave birth to son Max in February 2007, explains, "I had a really hard time being light before. I'd get a little weird about it being too clichéd. My first record was very clichéd pop - what everyone else wanted. Stripped was inspired by a lot of pain and Back to Basics still had some sort of relation to my past."

"My new one is just about the future - my son in my life, motivating me to want to play and have fun."

However, she insists she's not yet ready to retire her raunchy stage outfits - even though she's now a mother.

Aguilera adds, "As far as motherhood affecting me creatively goes - like, 'I shouldn't be wearing that because I'm a mom' it hasn't. That wouldn't be fair to me. It's important to keep a strong sense of yourself when you're a mom. You're still you."

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