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Ashlee Simpson-Wentz and Pete Wentz Welcome First Baby!

Entertainment Tonight

ET has learned that Ashlee Simpson-Wentz and Pete Wentz have welcomed their first bundle of joy Thursday night.

The singer gave birth to a baby boy named Bronx Mowgli Wentz. Baby boy Bronx weighed in at 7 lbs., 11 oz, and measured 20 1/2 inches long.

"Ashlee, Pete and baby Bronx are all healthy and happy, and thank everyone for their well wishes," a spokesperson for the couple tells ET.

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