Jessica Simpson and Eric Johnson

Just as she's dropped her baby weight, Jessica Simpson is pregnant again, Us Weekly reports.

Check out photos of Jessica Simpson through the years

According to the magazine, Simpson, 32, got a little holiday surprise when she and her fiance Eric Johnson learned that they were expecting. (An email to her rep has not yet been returned.) The Fashion Star mentor gave birth to their first child, daughter Maxwell Drew, just seven months ago.

Check out celebrities' dramatic weight loss

Simpson has been open about her struggle to lose the 70 pounds she gained during her pregnancy. Shortly after giving birth, Simpson confirmed she had become Weight Watchers' newest celebrity spokesperson and hoped to shed the pounds within a year. Last week, after losing 60 pounds, she showed off her new figure at an event in Florida.