Singer Pink and her husband Carey Hart are expecting a baby to take their family to four.

PINK has yet again proved how good she can be at evading the media by posting a photo of her heavily pregnant self to Instagram.

The singer announced her pregnancy with a simple ‘Suprise!’ showing off her huge baby bump as her five-year old daughter Willow Sage cuddles her.

Both dressed in similar ivory white, lacy outfits as Willow also wore an adorable pair of pink cowboy boots and an akubra style hat.

Surprise!

A photo posted by P!NK (@pink) on

Fans and media alike are still reeling from the announcement as most speculate how the Just Like Fire singer managed to keep it a secret.

Pink’s Instagram posts have strategically not included her stomach for a number of months. The Just Give Me A Reason singer can be seen holding a basket in front of her in a photo posted four months ago.

The new baby will be Pink’s second child with her motocross husband Carey Hart.

Pink with husband Carey Hart and their child Willow Sage.

Pink with husband Carey Hart and their child Willow Sage.Source:Supplied

The couple married in 2006 however have not always had the smoothest relationship.

They separated in 2008 after cheating allegations with Hart starring in the singer’s So What video to deal with their separation.

After undergoing marriage counselling, the couple reconciled in 2010 with Pink announcing her pregnancy the same year.

The singer’s most recent single Just Like Fire was recorded specifically for Alice Through The Looking Glass. The song hit number one in Australia.

Pink hinted back in May to Good Morning Americathat she was verging on having another child telling them, “I love being a mama. I made a choice a long time ago that I was going to have a successful family and that is my absolute number one goal in life,” she said.

“I feel like I have two kids right now. I would like a third. No, I want to say that Carey Hart’s an awesome husband and a really good dad, but he’s also like a second child,” she continued.

Ironically, and judging by Pink’s belly in her Instagram photo she was probably already pregnant while giving that interview.