Lately, the singer and fashion mogul has kept stepping out in loose-fitting outfits, seemingly trying to hide something.
Simpson, dressed in a tight black Lycra T-shirt, showed a burgeoning baby bump upon her arrival at JFK from LAX on Monday.
In addition, the 31-year-old singer stepped out in New York wearing a giant poncho and protectively cradling her bloated stomach.
Simpson is engaged to former NFL player Eric Johnson, 32.
Rumors that Jessica and Eric are expecting have been circulating since July.