When Leno asked if she was having a little girl or boy, Garner replied that it was a little “something,” but did admit she knew the sex of the baby.

“I’m not supposed to share it with you Jay,” Garner coyly said.

The star of the new movie “Butter” did reveal that she was due in the spring

Garner also shared a story of when she was at a restaurant last November and a stranger commented on how big her baby bump looked. It's the last thing a pregnant woman wants to hear.

“Wow, you look tiny. Wow, how gorgeous are you. Look how thin your thighs are,” Garner suggested as alternatives.

What the former “Alias” star is hearing a lot of at home are baby name suggestions from her two young daughters, Seraphina and Violet.

“Our girls are working on names. At first they were definitely Disney,” Garner said, adding that some of their suggestions were Donald Duck and Minnie Mouse Affleck.

Now the girls are polling everyone they come in contact with for names.

As excited as her girls are, Garner said that she and her husband, Ben Affleck, aren’t revealing anything to the girls either.

Does Garner want a third girl to add to her brood?

People magazine reported that, in the past, Garner has said she’d like a third little girl.

Watch more of the interview here .