Updated On: 31 October, 2013 05:25 PM IST | | IANS
Aamir Khan, who has played a variety of roles in his 25-year-old career, says 'Dhoom 3' is his toughest role so far
In the last couple of years, the 48-year-old star gave hits in the form of 'Taare Zameen Par', 'Ghajini' and '3 Idiots' and his role in each of them was as different as chalk to cheese.