It seems The Block family is growing a little bigger.

The show’s popular couple Haydn Wise, 37, and Chelsea, 36, have welcomed their second child, sharing the news in a sweet Instagram picture posted by The Block.

‘Congratulations Chelsea and Haydn on baby number two!’ the caption read, which was accompanied by a heartwarming photo of the happy parents in hospital with their bundle of joy.

Haydn could be seen gleaming at the camera as he snapped a shot of himself with Chelsea and their new bub to mark the milestone moment.

The post then went on to reveal the name of the family’s new addition.

‘Welcome to the world, Jaxon Stephen Wise, who was born on Sunday weighing 3.38kg,’ it continued.

Haydn Wise, 37, and his wife Chelsea, 36, have welcomed their second child, sharing the news in a sweet Instagram picture posted by The Block

Haydn, who shares an Instagram profile with his partner on the show Ricky Recard, also posted a clip of the blissful family on the platform.

In the sweet video, Chelsea could be seen holding her newborn and their daughter Matilda, who let out a giant giggle as she looked at her baby brother.

The TV couple announced that they were expecting their second child in October last year.

The birth of the couple’s daughter occurred during the first week of filming of Australia’s favourite home renovation show.

The series saw Haydn, who competed in season 20 with his best friend Ricky, flown out of Phillip Island by helicopter for the birth of his daughter.

‘Within the first month of him returning home it happened. Everyone’s a little but shocked. I guess when it rains, it pours,’ Chelsea told Now to Love about her pregnancy.

‘Haydn and I were kept apart, as you know, with The Block for a period of time, so the reunion was lovely,’ she said.

A teaser for Nine’s 20th anniversary season showed Chelsea’s early delivery via C-section throwing bathroom week into chaos.

Haydn also took to his shared Instagram profile with The Block’s Ricky Recard to share a clip of his family, showing Chelsea, their daughter Matilda and newborn Jaxon looking blissful in the hospital bed

The birth of the couple’s first child occurred during the first week of filming of Australia’s favourite home renovation show

The preview showed Blockhead Haydn getting an emergency call from his partner just as things on the building site were heating up.

After learning his wife was ‘going into early labour’, the Melbourne IT manager appeared to be astonished by the news.

While Haydn was left visibly shocked, host Scott Cam was clearly delighted with the news of a ‘Baby Blockhead’.

‘I’m gonna be an Uncle,’ he exclaimed.

The couple previously told Woman’s Day that they had undergone rounds of IVF before their daughter Matilda was conceived naturally.

‘We thought there was no chance we would ever be parents,’ Haydn explained.

‘She’s 100 per cent a miracle,’ Chelsea told the publication at the time, adding that the tot came via emergency C-section in March.

‘We’d been trying for nine years and we knew pretty quickly we weren’t going to have one naturally, or we didn’t think we were, so we went through the IVF process,’ Haydn said.