One of the leading actors in Hindi cinema, Aamir Khan is celebrating his 48th birthday today. Aamir was born in Bandra's Holy Family Hospital, Mumbai, India, to a Muslim family that has been actively involved in the Indian motion picture industry for several decades. Currently, Aamir Khan is busy shooting in Switzerland for his upcoming film 'Dhoom 3' which has Katrina Kaif as the leading lady. Most of the Bollywood biggies greeted Aamir on his birthday through phone and via twitter.