Video: 'Big Bang' Star Gets Animated for 'Kick Buttowski'
Us Weekly confirms the pair became new parents to a daughter named Adeline on May 8.
The family is thrilled," a source tells the magazine. "Simon is excited to be a father -- he's been doing his reading."
Video: 'Big Bang Theory' Cast Celebrates 100th Episode
Helberg and Towne tied the knot in 2007.