Simon Helberg, Wife Jocelyn Towne Welcome Baby Daughter Adeline

Simon Helberg and Jocelyn Towne arrive at the 18th Annual Screen Actors Guild Awards. Frazer Harrison/Getty Images)

Big Bang baby! 

Simon Helberg and his wife Jocelyn Towne welcomed daughter Adeline on May 8, Helberg's rep confirms to Us Weekly exclusively.

This is the first child for The Big Bang Theory star and his actress/writer/director wife. "The family is thrilled," a source says. "Simon is excited to be a father — he's been doing his reading."

Helberg, 31, met Towne in Los Angeles, Calif. and they married in 2007.

The season finale of The Big Bang Theory aired Thursday and Helberg's character (Howard Wolowitz) married Bernadette Rostenkowski (played by Melissa Rauch) and he was launched into outer space!

"It seems like it built up pretty evenly and naturally," Helberg told Entertainment Weekly of the big finale episode. "You start to see, wait a second, even though he’s married, the dynamic has not completely shifted yet. He’s not grown up. He’s still with his mother. He still needs these guys to hang out with. And now you’re going to get this whole view of what married life is like, which I think is a kind of fascinating thing to put into this show about young nerds."

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