Margot Robbie and Tom Ackerley ‘Can’t Wait’ to Welcome First Baby (Exclusive Source)

Margot Robbie and Tom Ackerley are excitedly gearing up for the birth of their first baby.

As the couple inches closer to their little one’s arrival, a source tells PEOPLE that they “can’t wait” to welcome their new addition. Multiple sources confirmed to PEOPLE in July that the Barbie star and her director husband, both 34, are expecting their first baby together.

“Margot absolutely can’t wait,” the insider tells PEOPLE, adding that Robbie and Ackerley have “wanted to be parents for a really long time, and are so happy.” 

A separate source echoed similar sentiments in July, telling PEOPLE that the couple “wanted to start a family for quite some time.”

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“Family means a lot to both of them and they knew early on in their relationship being parents was something they really wanted,” the insider told PEOPLE at the time. 

“They’ve been keeping it under wraps for a while but are happy the news is out,” added the source.

One of the only people to discover Robbie’s pregnancy news was her Barbie costar Ariana Greenblatt’s mom.

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Speaking to PEOPLE in August about the bonds she formed while filming the Greta Gerwig-directed blockbuster film Barbie, Greenblatt revealed that her mom, Soli, had a dream about Robbie’s pregnancy.

“I was like, ‘Mom, I’m not texting Margot ‘I think you’re pregnant.’ She’s going to think I’m crazy,” Greenblatt, 16, said in PEOPLE’s August digital cover story.

Then, when the news was out, she went straight to her mom: “I was like, ‘Mom, Margot’s pregnancy came out today.’ And she was like, ‘I called it, I’m a bruja (witch). I can tell the future.’ ” She gave a dramatic pause. “That happens a lot with her.”