Jessica Alba 'not planning to have more kids'

Jessica Alba has revealed that she can't "imagine" having any more children.

The actress - who is currently pregnant with her second child - explained that she doesn't expect to have more kids with her husband Cash Warren.

She told E! Online: "I really can't imagine having more than this - more than what's happening right now.

"Kids are a lot of work and at the end of a pregnancy, it's sort of like you can't really imagine having more. But we'll see."

Alba also revealed that director Robert Rodriguez wrote her role of spy hunter's wife Marissa Cortez Wilson in Spy Kids 4: All the Time in the World after watching her caring for daughter Honour while working on the movie Machete with him.

She added: "When I became a mother, I talked to him about getting back to work and how does he do it, how does he juggle spending time with his family - he has five children - but also focus on his career because he's done it so well.

"So when I was shooting Machete, him seeing me trying to change my kid's diaper and take conference calls and I'm on the set trying to learn lines and trying to do a million things at once kind of inspired him to write the character that I play - a woman who's trying to do a million things at once."

Watch the trailer for Machete below: