Saif Ali Khan celebrates his birthday today (August 16). The actor along with lady love Kareena Kapoor was spotted at Mumbai airport enroute to London. We guess it is going to be a quiet celebration, considering that the Kapoor khandaan is in mourning.

The 'Chote Nawab', as he is popularly called in B-town, shun his cool dude image and emerged in a new avatar with moustache and a ;different' hairstyle for 'Aarakshan'.

The film also features Deepika Padukone and Amitabh Bachchan.

Though the film has not made so much hype in the box office till now, but the controversy that surrounded the film has dragged many movie-buffs to theaters.

Dealing on the controversial topic of caste-based reservation system in education, the Prakash Jha directed film has attracted the grudge of several political parties.

Saif's career in films has always been a roller-coaster ride. His initial days in the B-town has been cold and insignificant.

With long hairs and a cute smile, Saif may have attracted few of his female fans but as his films never made a mark on the box office.

It was with 'Hum Saath-Saath Hain' that he started making an impact on the audience with his witty dialogues.

His critics and fans appreciated his role in Karan Johar's 'Kal Ho Naa Ho' and Faran Akhtar's debut film 'Dil Chahta Hai'.

But it was perhaps with 'Hum Tum' and 'Parineeta' that made Indian audience witness a matured and smart Saif.

Today, Saif is rightly be known as the fourth Khan of B-town, joining the list superstars like Shah Rukh Khan, Aamir Khan and Salman Khan.