Credit: Jason LaVeris/FilmMagic

Ready for diaper duty?

"The Big Bang Theory's Simon Helberg and his wife, actress/writer/director Jocelyn Towne, have announced they are expecting their first child in the spring," the CBS star's rep tells Us Weekly exclusively.

Helberg, 31, met Towne in Los Angeles, Calif. They married in 2007. His other film and TV credits include MADtv, National Lampoon's Van Wilder, A Cinderella Story and A Serious Man.

The Big Bang Theory is nominated for Outstanding Performance by an Ensemble in a Comedy Series at Sunday's 18th Annual SAG Awards.