'Big Bang Theory' Star Simon Helberg Welcomes A Son

June 25, 2014 -- Simon Helberg is a dad times two.

The "Big Bang Theory" star and his wife, Jocelyn Towne, have welcomed their second child, a boy.

Wilder Towne Helberg was born April 23, a rep for the actor confirmed to ABC News. Baby Wilder joins big sister Adeline, 2.

Helberg, 33, and Towne were married in 2007. They recently worked together on the film, "I Am I." Both appeared in the movie, and Towne wrote, directed and executive produced it. Helberg was also listed as an executive producer.

It's been an exciting few months for the cast of the CBS series. Jim Parsons has made waves with his new role in "The Normal Heart," while Mayim Bialik recently reunited with her former "Blossom" co-stars.