Stepping out to promote her upcoming movie, "This is 40," Megan Fox visited "The Tonight Show with Jay Leno" on Monday (December 17).
In the film, the 26-year-old actress plays Desi, an employee of co-star Leslie Mann whose wardrobe is pretty skimpy.
Since the movie is about turning 40, the late-night host asked Ms. Fox what she thought about going over the hill: "It sounds so old to me ... I try not to think about it."
Jay also called the "Transformers" stunner out on previously hiding her pregnancy the last time she was on the show, and even got her dish on the ups and downs of the whole nine-month process.
"They sketch out the faces of a woman in labor for your husband, so that he knows when to take you to the hospital, when it's for real," Megan said, adding, "I was convinced that I was maybe birthing a vampire baby."
You can check out more of her "Tonight Show" appearance in the players below!