MUMBAI: Aamir Khan is busy travelling. Recently he took a secret trip to Australia, and now he’s departing for the US.

Aamir Khan was spotted at the airport recently in a brown jacket and jeans.

That’s not all, though. Aamir Khan was seen wearing the bowler hat he has made famous in the teaser trailer for ‘Dhoom 3‘.

We must add that the hat really suited Aamir Khan, who seemed pleased at being greeted by the shutterbugs as well.

But why was Aamir Khan going to the US? If you remember, part of ‘Dhoom 3′ is shot in Chicago. Could there be some promotions taking place there?

‘Dhoom 3′ stars Abhishek Bachchan, Uday Chopra and Katrina Kaif alongside Aamir Khan and releases on 20 December, 2013, in time for the Christmas blast.