Isla Fisher is pregnant again, according to reports.

The Great Gatsby actress already has two children with husband Sacha Baron Cohen, Olive, six, and Elula, four. Us Weekly are now claiming that the Australian is now expecting her third child.

"She's about three months along," a source told the outlet.

While a rep for the couple has yet to comment, it is unlikely either of them will officially confirm it as they are notoriously private. However the 38-year-old was spotted rocking a small baby bump while running errands in London on September 23.

She wore a loose-fitted blue top, baggy jeans and covered up in a white blazer. It is also rumoured that she has pulled out of Now You See Me 2 to concentrate on her pregnancy.

"Production starts in November and she knew she wouldn't be able to do it," the source added.

Isla married the British actor and comedian in Paris in March 2010 after first meeting in 2002.

Despite starring roles in films including Definitely, Maybe, Confessions of a Shopaholic and Now You See Me, the beautiful redhead has always made it clear that her family will always come first.

"Family is 100 per cent my top priority. So I'm much more comfortable doing supporting roles right now. And often," she told British newspaper The Telegraph in July last year. "They're the most interesting, you get to be a character actress."

While the actress never discussed her pregnancies at the time, she has opened up about them after the event. And she is no doubt hoping to avoid putting on as much weight with this pregnancy as she did with the first two.

"I gained 65 pounds with my first baby and 70 with my second," she revealed to Fitness magazine in April last year. "I had severe morning sickness both times, so I mostly ate supersize bowls of white pasta with loads of butter and cheese because that was the only thing that took away the nausea."

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