Miranda Kerr admits it will be "hard" to decide where she raises her family.

The Australian model has a 10-month-old son, Flynn, with British husband Orlando Bloom, and while they are happy to travel the world while the American-born tot is young, she knows they will have to eventually pick a country to settle down in.

She said: "When Orlando is working, I make sure I'm not working. So whenever he has to go to New Zealand, where he's currently filming 'The Hobbit', Flynn and I go with him, too. Then, when I'm working, he makes sure he's off -- so there's always at least one of us with Flynn.

"It's great that we have these few years when we can travel before Flynn has to go to school. I don't know yet where I'd like him to go to school, though. It's going to be hard to choose -- he has three passports: British, Australian and American. 'Officially' he's American, which both of us find amazing."

However, Miranda, 28, knows where she wants to spend Flynn's first Christmas -- in her native Australia.

Miranda -- who has homes in Australia, England and the U.S. -- told Britain's HELLO! magazine: "I manage to get back to Australia at least a couple of times a year to see my family. I'm hoping the three of us will be able to spend Flynn's first Christmas there. Orlando and I are just trying to work out our schedules right now."