Jonah Hill becomes a father as he welcomes first child with Olivia Millar

Congratulations are in order for Jonah Hill, who has become a dad for the first time as partner Olivia Millar gives birth.

The Wolf of Wall Street star and his other half had remained tight-lipped about their pregnancy - even after Millar was reportedly seen out and about with a baby bump.

The couple recently missed Hill’s sister Beanie Feldstein’s wedding a few weeks back, which sparked speculation that Millar was either in the very late stages of her pregnancy or had given birth.

Now, a rep for 39-year-old Hill has confirmed that the pair have become parents - although they are yet to reveal the name or sex of the baby.

Hill seemingly prefers to keep his private life private - and who can blame him?

In an open letter to fans last year, Hill said that he had battled anxiety issues and panic attacks, which meant he had decided to opt out of promoting Stutz - a documentary Hill directed - or Kenya Barris’ You People, which he wrote, produced and starred in.

Netflix

In the letter, he said: “I have finished directing my second film, a documentary about me and my therapist which explores mental health in general called Stutz.

"The whole purpose of making this film is to give therapy and the tools I’ve learned in therapy to a wide audience for private use through an entertaining film.

"Through this journey of self-discovery within the film, I have come to the understanding that I have spent nearly 20 years experiencing anxiety attacks, which are exacerbated by media appearances and public-facing events.

“I am so grateful that the film will make its world premiere at a prestigious film festival this fall, and I can’t wait to share it with audiences around the world in the hope that it will help those struggling.

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“However, you won’t see me out there promoting this film, or any of my upcoming films, while I take this important step to protect myself. If I made myself sicker by going out there and promoting it, I wouldn’t be acting true to myself or to the film."

He went on to say that he was in a ‘privileged’ position to be able to take time off work while working on his mental health.

“I won’t lose my job while working on my anxiety,” he continued. “With this letter and with Stutz, I’m hoping to make it more normal for people to talk and act on this stuff.

“So they can take steps towards feeling better and so that the people in their lives might understand their issues more clearly.”