Jennifer Lopez, 40: "I Want More Babies!"

Credit: Kevork Djansezian/Getty Images

Could Max and Emme have a little brother or sister sometime soon?

Yes -- if Jennifer Lopez, 40, has her way!

"I want more babies," Lopez tells Entertainment Tonight while promoting her new romantic comedy, The Back-up Plan (out this April).

Check out adorable photos of stars babies

Lopez -- who wed Marc Anthony in 2007-- says the movie brings up a few good points about not being able to plan what comes next in life. The flick is about a woman who is artificially inseminated with twins -- and then meets the man of her dreams the same day.

Check out 25 gorgeous celebrity wedding photos

"As much as you would like to say, 'This is what I want to do and this is how I want to do it, and by this time and it's all going to be perfect,' that's not really life, you know?" Lopez says. "That's not really how it is. You have to just be willing to go with what happens."

So how are her 2-year-old twins doing?

See who else in Hollywood has twins!

"They just love people, and they love music, and they love laughing and running around," Lopez gushes. "They're very well adjusted to this life; they know nothing else... It's like traveling, dancing, singing, sets -- that's their life. They kind of get, like, this is what we do."