Ashlee Simpson   and husband   Pete Wentz   have welcomed their first child, a boy.  

Bronx Mowgli Wentz - who weighed 7 lbs, 11 oz, and was 20.5 inches long - was born Thursday night, a spokesperson for the couple confirms .  

"Proud new parents Pete Wentz and Ashlee Simpson-Wentz welcomed new son, Bronx Mowgli Wentz, late this evening," the rep tells   . "Ashlee, Pete and baby Bronx are all healthy and happy, and thank everyone for their well wishes!"  


"Carrying a child is the most inspiring, emotional, amazing experience of my life," Simpson wrote on her MySpace page. "My weight and my pant size are the absolute last thing I am concerned about. I am only concerned with having a healthy pregnancy and a healthy baby."  

During her pregnancy, Wentz -- whom she   wed   in May -- doted on her, often fetching her No. 1 craving: green olives.  

He said she wanted "green olives on   everything!   You always have to be ready."  

Ashlee Simpson and Pete Wentz Welcome Baby Boy!