Christina Aguilera announces that she's pregnant with her second child.

It’s been a big week for Christina Aguilera who revealed last week that she’s engaged …and now she’s expecting a second baby.

Singing diva sensation Christina Aguilera, 33, only last week announced that she was engaged to boyfriend Matt Rutler. And now only six days later People magazine has revealed that Christina is pregnant.

Many in the media are speculating that Rutler felt pressured to propose because of the pregnancy but a source close to the couple has told US weekly that he had planned to propose before they found out Christina was pregnant.

The (remarkably well informed) source added that the pregnancy “wasn’t expected, but it also wasn’t unwelcome. They are all very excited though! Christina loves being a mom!” Christina is already a mother to 6-year-old Max, who was born from her first marriage to ex-husband, Jordan Bratman.

Meanwhile, Rutler’s mother Kathleen has opened up about the couple’s potential move to the east coast from LA. Kathleen told InTouch that though she’s been ‘told not to say anything… when you have baby, you’re not planning on moving anywhere anytime soon.’

Christina announces her engagement: 'He asked and I said...'

The pop singer and coach on The Voice met soon-to-be hubby, 29-year-old Matt Rutler in 2010 on the set of her film 'Burlesque', where Rutler was working as a production assistant.

At the time Aguilera was in the midst of a painful divorce with ex-husband Jordan Bratman.

They announced their engagement via social media where Aguilera showed off her impressive bling.

Christina gave birth to her first son, six-year-old Max, in 2008 when she was married to music producer Bratman. At the time she was heavily criticised in the press for the weight she gained following the birth of Max.

Having lost 22 kilograms over the past few months, Aguilera will no doubt be watched like a hawk throughout her second pregnancy by the eyes of the press.

Fingers crossed that her feel good anthems Fighter and Beautiful will keep her fist-pumping throughout the pregnancy and not listening to the haters.

 Check out this gallery for more pics of the newly loved up and knocked Christina...