Josh Duhamel wants another baby son.

The 42-year-old actor is keen to add to his brood with wife Fergie, with whom he has 18-month-old son Axl, but he's worried about having a daughter because he grew up with three sisters and knows girls can become terrors when they hit their teenage years.

Speaking to 'Access Hollywood Live' last night (18.02.15), the hunky star said: ''I'd love to [have more children with Fergie], hopefully in the next year or two.''

Talking about growing up with three sisters, he added: ''They taught me that I would be really happy to have another son.

''Girls are great. I would be totally happy to have a girl, but... they get to be those teenage years and [want] independence, you know? It isn't always easy - especially for the mother.''

Meanwhile Josh and Fergie have been together ten years - married for six - and he believes their relationship really works because they actually enjoy being around one another.

He said: ''I would say it's working because we have a lot of fun. I genuinely like her! She likes me, you know?

''I'm nobody to give advice on relationships, but for whatever reason, we just really like each other.''