Another Fighter is on the way! Almost one week after Christina Aguilera announced her Valentine's Day engagement to boyfriend Matt Rutler on Twitter, a source has exclusively confirmed to Us Weekly that the Grammy winner is pregnant with her second child.

Aguilera, 33, welcomed son Max with now-ex-husband Jordan Bratman in January 2008, and has enjoyed watching her now-6-year-old grow. The "Beautiful" singer took season 4 off from The Voice to spend more time with her family and to focus on her music career. She's also taking off season 6 of the show, when Shakira will fill the pop diva's red chair.

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The newly-engaged couple and expectant parents have been together for almost three years. They met on the set of Aguilera's 2010 film Burlesque.

The seasoned vocalist was previously married to Jordan Bratman from November 2005 to October 2010, and he shares custody of Max.

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