Sonny Bill Williams welcomes third child!

Sonny Bill Williams has become a father for the third time!

The two-time World Cup-winning All Black took to Instagram to announce the arrival of his newborn son.

Alongside a photo of tot's hand, Sonny revealed they've name their son Zaid Williams.

"Asalamualakium son - mummy, daddy and your sisters love you so much" he captioned the picture!

Assalamualaikum' generally means 'peace be unto you' (or, 'peace be with you').

READ MORE:
• Mum-to-be divides the internet after asking if it's OK to 'steal' a baby name
• Eva Longoria welcomes her first baby into the world

It seems Sonny and his wife, Alana, kept this wee secret from everyone!

The 32-year-old married the former Brazilian nightclub dancer in 2013, the same year he won an NRL grand final with the Sydney Roosters.

They welcomed their first daughter, Imaan, in 2014 and had their second baby girl Aisha in 2016.

Congratulations!