Kim Kardashian West and Kanye West have announced the arrival of their second child, a baby boy.

The A-list couple announced the happy news on Kim's official website on Saturday (December 5), which contained the message: "To our fans: Kanye and I welcome our baby boy!"

The short statement read: "Kim Kardashian West and Kanye West welcomed the arrival of their son this morning. "Mother and son are doing well."

Kardashian West also tweeted a picture which appeared to show herself and her husband holding hands along with the caption: "He's here!"

Kardashian West had been active on social media leading up to the birth of her second baby, tweeting a photo of her baby bump on Friday (December 4) along with the caption: "Ready whenever you are lol".

This is the couple's second baby, joining daughter North West who was born in June 2013. The name of their newborn has not yet been revealed.