Margot Robbie is very excited to be a mom for the first time.

The actress is “spending time in Los Angeles and preparing for the baby's arrival,” a source told People of her pregnancy.

“Margot absolutely cannot wait to welcome her little one,” the source said, adding that she and husband Tom Ackerley “have wanted to be parents for a really long time and are so happy.”

The source added, “She looks amazing. She is usually one of the hardest working actresses in Hollywood. Right now she is enjoying a little time away from filming.” However, she “still seems to be working a little bit. She likes to keep busy”.

Robbie's pregnancy was revealed in July, and since then she has shown off her baby bump in stunning maternity looks at the Wimbledon tennis tournament that month and on the red carpet at a screening of her husband's latest film, My Old Ass, in September.

Robbie and Ackerley were married in December 2016 in the Barbie star's native Australia.

The actress has said several times in the past that she was in no rush to have children, partly because she wanted to be able to make the child she was given the lead role.

Commenting on how many children she wanted in a 2016 interview with Sunday Style, Robbie said, “I grew up in a family of four [children], so that sounds like a good number” (via The Daily Mail).

She added at the time, “I want to put family on the back burner because I know that when I have kids, they will be my priority.”