Margot Robbie has declared being a mom is "the best".

The 35-year-old Hollywood actress welcomed her first child - a son - with her husband Tom Ackerley in October and she's now opened up about life as a new parent and admitted she worries gushing about her baby may sound "boring" to those who don't have children of their own.

During an interview with Entertainment Tonight, Margot said: "It's like, [when] you try to explain to someone who has kids, you don't need to because they get it, and if they don't, it's probably just really boring to hear.

"So, it's kind of like: 'It's the best', you know?"

The couple - who married in 2016 - have yet to publicly reveal their son's name or any further details about his arrival, with reports suggesting they made a concerted effort to keep their baby news quiet.

A recent report suggested they have been enjoying a lot of quiet family time at home since their little boy arrived.

A source told PEOPLE: "They waited a long time to get pregnant, so it was almost unbelievable when the baby actually arrived.

"They've both been settling into being parents. They're homebodies so it's been lovely to spend the time just them, at home with him. They're so happy."

Margot previously described herself as the "ultimate single gal" before meeting Tom, but the Wolf of Wall Street actress admitted the film producer totally changed her outlook entirely.

Reflecting on the evolution of their romance, Margot told Vogue magazine: "I was the ultimate single gal. The idea of relationships made me want to vomit. "And then this crept up on me. We were friends for so long. I was always in love with him, but I thought, 'Oh, he would never love me back. Don't make it weird, Margot. Don't be stupid and tell him that you like him'.

"And then it happened, and I was like, of course we're together."

Margot married Tom in a private ceremony in Byron Bay in Australia and she admitted the relationship just worked out perfectly.

She added: "This makes so much sense, the way nothing has ever made sense before."