The 23-year-old singer, who recently got engaged to musician Pete Wentz, did her best to deal with the questions when she appeared on the Ellen DeGeneres Show, which will be aired today (April 24), reported People.
The talk show host asked directly, "Are you or are you not pregnant?"
Simpson replied, "Well, that has been going on for quite a while. That is something that I choose personally not to discuss."
She then changed the subject in a joking manner, "Do I look like I had 10 cheeseburgers or something? Because I don’t think I do."
DeGeneres made Simpson promise that if she was pregnant, she cannot keep it a secret as long as Jennifer Lopez.
"I swear," Simpson replied. "I promise you that. I give you my pinky on that."