PHOTO: Cameron Diaz shows off a baby bump!

Cameron Diaz showed off a cute baby bump, but she’s not pregnant. The 40-year-old actress was filming scenes for the upcoming The Other Woman in NYC Tuesday.

She also filmed some smooches with Lady Gaga’s boyfriend Taylor Kinney.

This isn’t the first time Cameron has put on a pregnancy belly for a movie, she donned one for the 2012 What to Expect When You’re Expecting.

Although Cameron hinted a few years ago that she may not want kids, praising women who are brave enough to admit that they don’t, last fall she told Esquire that children still might be in the cards for her. “I don’t need to have the children in my life be a part of my literal flesh,” she said. “And anyway, there’s still a possibility of that, I ain’t that old.”

There’s always adoption! But kids or no kids, Cameron says she’s happier than ever. “I’m so excited. Getting older is the best part of life. Like, I know more than I’ve ever known. I have gratitude. I know myself better. I feel more capable than ever. And as far as the physicality of it, I feel better at 40 than I did at 25.”