HOLLYWOOD, Calif. — Ashlee Simpson and Pete Wentz are now proud parents.
Simpson gave birth to the couple's first child, a baby boy, on Thursday night, according to People.
The couple's son, named Bronx Mowgli Wentz, weighed in at 7 lbs., 11 oz. and was 20 1/2 inches long, the magazine reports.
"Ashlee, Pete and baby Bronx are all healthy and happy, and thank everyone for their well wishes!" a rep for the pair tells the mag.
Simpson reportedly went to the hospital on Sunday, but it turned out to be a "false alarm."
On Tuesday, Simpson's older sister, Jessica, said the birth was coming soon while appearing on "The Ellen DeGeneres Show."
"They're going to have to [induce labor], it's already developing really quick," she told DeGeneres.
The Fall Out Boy rocker, meanwhile, skipped out on recent scheduled appearances on "Larry King Live" and "Total Request Live" as the baby's arrival appeared imminent.
After weeks of speculation, Simpson, 24, confirmed her pregnancy in late May, shortly after she and Wentz, 29, tied the knot. The couple's wedding took place in the backyard of her parents' home in Encino, Calif. and was officiated by her father.
In August, Simpson told ET Canada that she was getting plenty of help as she prepared to become a mother for the first time.
"My mom and my grandmother [have] given me good motherly advice, but it's one of those things where your mother instincts kind of kick in right away," she said.