Christina Aguilera finally addressed her pregnancy on Twitter by posting a photo of herself sporting a baby bump

She might have been secretive about her baby bump but Christina Aguilera did what a lot of celebrities do nowadays when it comes to announcing something personal: logging on to Twitter and posting a picture to validate a point. And that's what she did.

In the picture posted, fiance Matthew Rutler's hand is placed on Aguilera's growing belly as she smiles for the camera in NYC.

Aguilera is expecting a baby girl. She announced the child's sex during a concert in Malaysia last month but this is the first snap of her bump.

The 33-year-old already has a six-year-old son, Max, with ex-husband Jordan Bratman.