American actor-musician Jason Schwartzman and Brady Cunningham are reportedly expecting their second child.

According to Us Weekly, the baby is due next year.

"Brady is due [in April] and she is feeling great," a source told the magazine. "They are not finding out the sex and are keeping the baby's gender a surprise."

The Saving Mr. Banks star and Cunningham are already parents to a three-year-old daughter, Marlowe, who was born on 4 December, 2010.

"Marlowe is super excited about becoming a big sister and they are thrilled to be adding to the family," the insider added.

Schwartzman, best known for roles in Rushmore and The Darjeeling Limited, tied the knot with the clothing designer after three years of dating at their San Fernando Valley home in 2009.

"We don't know the sex of our baby so that's going to be a great moment," Schwartzman told Us weekly in September 2011.

The Bored to Death actor had said then that he could not wait to see his little baby and start showing their home.

"I read a book that said you're supposed to do that -- it's called The Baby Whisperer. You're supposed to take the baby around and be like, 'This is the bathroom. And this is the living room.' I was like, 'Really?'" he said.