By Kate Ward
Updated February 17, 2011 at 05:56 PM EST

Rod Stewart, 66, and wife Penny Lancaster Stewart, 39, have welcomed their second son, People reports. Aiden Stewart — brother to the couple’s first son, Alastair Wallace, 5 — was born Wednesday, and is Stewart’s eighth child. “Mother and baby are healthy and blissfully happy,” a rep for the Stewarts told People.