Late last month, In Touch Weekly reported that Simpson -- who will serve as a judge on NBC's upcoming Fashion Star reality competition and previously starred in VH1's The Price of Beauty and MTV's Newlyweds reality series -- had learned she was pregnant on September 12.
"She took a home pregnancy test," a friend told the magazine. "And when it came back positive, she called a close friend and asked her to buy several more tests and rush them over."
Simpson reportedly took "nearly a dozen" additional home pregnancy tests before she shared the news with fiance Eric Johnson and had the pregnancy confirmed by a doctor a week later.
According to In Touch, the pregnancy was unplanned and the result of Simpson's decision to stop using birth control shortly after she and Johnson, a retired former NFL player, got engaged late last year.
DISCUSS AND COMMENT ON THIS STORY Reality TV World now offers Facebook Comments on our stories. To post a comment, log into Facebook and then 'Add' your comment. To report spam or abuse, click the 'X' in the upper right corner of the comment box. Get more Reality TV World! Follow us on Twitter, like us on Facebook or add our RSS feed.