NRL superstar Latrell Mitchell has become a father for a third time, announcing the arrival of his first son.

The South Sydney champion and his wife Brielle Mercy shared the news in a joint Instagram post on Friday.

‘Prince of @winmarra01 has arrived!’ Mitchell and Mercy wrote.

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Minmarra, which translates to ‘mountain people’, is the Rabbitohs talisman’s own clothing label.

The couple did not reveal a name, but the baby joins sisters Inala and Aleena.

The post was flooded with messages of congratulations from Mitchell’s teammates and other notable names.

Latrell Mitchell’s newborn son. Credit: Instagram

Cody Walker wrote: “Congrats fam, can’t wait to meet him”.

Cameron Murray added: “Congrats guys”.

“Beautiful bra,” Isaiah Tass said.

Penrith star Brian To’o said: “Congrats uncle”.

Former NRL names like Andrew Fifita and Malakai Watene-Zelezniak also commented.

The South Sydney Rabbitohs made a separate post of their own for the exciting arrival.

“Congrats to Latrell and Brielle on the birth of their son! Welcome to the (world) young fella,” the Rabbitohs wrote.