Spotted on the New York set of her new film, The Other Woman, Cameron has strapped on a prosthetic baby belly for her part in the comedy that sees her teaming up with another woman to plot revenge on their cheating partner.
Looking ever the casual but glamorous mum-to-be in a breezy white shift dress with a gold cuff and nude high heels, Cam makes motherhood look oh-so chic. But then we'd expect her to be spot on in the maternity style stakes by now - having already played at being pregnant in the movie What to Expect When You're Expecting.
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We wonder if Kate and Kim will be taking pregnancy styling tips...
WATCH: CAMERON DIAZ AT THE NEW YORK PREMIERE OF WHAT TO EXPECT WHEN YOU'RE EXPECTING