Owen Wilson says his sons are very close.

The 'Night at the Museum 3' star, who has three-year-old Ford with ex-girlfriend Jade Duell and 10-month-old Finn with his long-time friend Caroline Lindqvist, admits his eldest child is very protective of his little half-brother.

He said: ''I've two great little boys, Ford and Finn. And Ford is very, kind of protective of his, he always calls him - he doesn't even call him by his name, he always calls him his baby brother.

''I think he likes the fact that he's just about 30 pounds, but that Finn is smaller. So it's always like, he always sort of cautions me, 'Don't kiss him unless you shaved dad, he doesn't like your whiskers!' ''

Asked if he sees the children a lot, the 46-year-old actor told 'The Ellen Degeneres Show': ''Yeah.''

Meanwhile, Owen admits he would love to star in a 'Zoolander' sequel and revealed Justin Theroux has already written the script.

He said: ''Well, I don't mean to be coy, but I know that there's a script and Ben [Stiller] is considering it. So we'll see.

''I do, yeah [want to make the film]. We have to do it.''