"It definitely wasn't planned. But yes, Jessica is pregnant again," the magazine's source revealed. "She really is overjoyed."
Simpson and fiance Eric Johnson, a former football player, welcomed daughter Maxwell Drew Johnson on May 1. "This has been the greatest experience of our lives!!" she said at the time.
The singer has not commented on the report.
Meanwhile, Backstreet Boy A.J. McLean and his wife Rochelle welcomed a daughter, Ava Jaymes, on Tuesday (Nov. 27).
"Rochelle and I are thrilled to announce the birth of our baby monkee," McLean announced on his website. "She arrived at 4:51 a.m. weighing 7 lbs., 7 oz. We are so in love with our bundle of joy and happy to have started our family now."
Ava is the "I Want It That Way" singer's first child.
And more than a month after giving birth to a son, it's nice to know that songstress Adele has managed to keep her child's name a secret, despite the likely best efforts of the British press.
This x 1000 RT @ gabz3003: that we still don't know adele's baby name shows that as a celeb if you want a private life, it is attainable
- Bill Werde (@bwerde) November 28, 2012