PIC: Meet Simon Helberg’s Adorable Baby Girl, Adeline!

Simon Helberg with wife Jocelyn Towne and baby girl Adeline in Los Angeles, CA on June 21, 2012. Splash News Online

Whoa baby!

Big Bang Theory star Simon Helberg stepped out in L.A. Thursday, showing off his latest, greatest project to date: his first child with his love of nearly a decade, Jocelyn Towne.

Helberg's wife gave birth to the couple's daughter, Adeline, May 8.

"The family is thrilled," a source told Us Weekly of the proud new parents at the time, adding that Helberg, 31, channeled his Big Bang Theory character prior to welcoming Adeline — by doing lots of research.

"Simon is excited to be a father," the source shared. "He's been doing his reading!"

The Let Go actor met Towne in Los Angeles; they dated for several years before making it official in a 2007 ceremony. Currently, they reside in Charlie Sheen's former Hollywood estate, which they purchased from the actor for $3 million last November.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!