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Oops! Pregnant Christina accidentally reveals baby's sex.

Christina Aguilera has let slip the sex of her baby to a crowd of fans. So, is she having a girl or a boy this time?

Christina Aguilera, 33, has not only confirmed that she’s pregnant with her second child, but she’s also accidentally told a huge audience that it’s a girl!

The singing sensation accidentally revealed her baby news on Friday during a concert in Malaysia, telling the crowd:

“I have another little one. This is her first show; you guys are her first show.”

Christina revealed she was pregnant in February, only six days after announcing her engagement to 29-year-old boyfriend Matt Rutler via

social media, where Aguilera showed off her impressive bling (right).

Christina is already a mother to 6-year-old Max, who was born during her first marriage to ex-husband, Jordan Bratman. So it looks like it will be a little sister for Max.

We'll be keeping a close eye on Christina's growing baby bump.

Click through this gallery for more pics of Christina and her growing family...

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