Justin announced the news on Thursday by sharing a video which showcased Hailey's growing belly.

They also shared a couple of images of themselves on the social media platform.

In one of the images, Justin could be seen holding Heily's belly lovingly.

The couple got hitched six years ago.

Justin gained recognition following the release of his debut extended play (EP) My World (2009), which was quickly met with international commercial success and led to his establishment as a prominent teen idol.

Bieber is one of the best-selling music artists of all time, with estimated sales of over 150 million records worldwide.