Love Island Australia star Grant Crapp and his girlfriend Lucy Cartwright have welcomed their third child – a baby boy.

The former reality TV star, 30, shared a sweet photo to social media on Wednesday which captured their newborn being hugged by his two older siblings.

Grant revealed their son’s name in the caption.

‘Oliver Benjamin Crapp. Welcome to the family,’ he wrote.

Many of Grant’s celebrity friends took to the comment section with their well-wishes.

‘Party of 5!!’ wrote I’m A Celebrity… Get Me Out Of Here! co-host Julia Morris.

‘What a beautiful family,’ added Olympic swimmer Emily Seebohm.

Love Island Australia star Grant Crapp and his girlfriend Lucy Cartwright have welcomed their third child – a baby boy

Grant and his partner Lucy are already the proud parents of daughter Charli, four, and son Levi, two.

The couple’s relationship caused quite the stir in 2018 when Grant won season one of Love Island Australia with his on-screen partner Tayla Damir.

Despite leaving the reality show in a relationship with Tayla, it was quickly revealed he had a ‘secret girlfriend’ back in Canberra.

Grant and Tayla then split up, with the star getting back together with Lucy in the weeks that followed.

Despite this controversy, the pair have gone from strength to strength ever since, and have purchased two homes together, in addition to having three children.

In 2019, Grant bought their first home together in Malua Bay, New South Wales.

And after snapping up the three bedroom cabin up for $380,000, the electrician has been renovating it ever since.

Grant has completely transformed the property, which is located two hours from his former home of Canberra, since becoming a first time homeowner.

The former reality TV star, 30, shared a sweet photo to social media on Wednesday which captured their newborn being hugged by his two older siblings

Grant and his partner Lucy are already the proud parents of daughter Charli, four, and son Levi, two

The star stripped the kitchen of its former fixtures, swapping the orange design for a an all white look and vibrant yellow countertops and tiles.

He has created a more intimate lounge space, away from the vast open plan layout that the house previously had.

Centered around the original slow combustion wood burner, Grant has set up a bold blue corner sofa with additional two seater couch.

‘I am a perfectionist,’ joked Grant, while highlighting the his wall-mounted TV which features no visible wires or cables.

Mocking the original walls and woodwork in the room, Grant added: ‘What the F is with “mission brown” skirting [boards]?’

Grant described the original look as ‘very 80s and old fashioned’ with ‘weird colours’ before having the room professionally re-designed.

With everything fitted new, the reality star went on to reveal that the entire room was made-over for just $1,500.

Grant claims the modest price covered $900 in labour for the plumbing and tiling, and $600 for the materials that were ‘mostly bought from Bunnings’.