Bollywood's Mr Perfectionist celebrates his 50th birthday on Saturday, 14 March 2015.
The "PK" actor, who celebrated his birthday with media on Friday, said that he is still 20 at heart.
"For me 50 is just a number and I don't take it seriously. I think all of us get stuck at a certain number when we become adult. So at heart, I am still 20," Aamir said on Friday.
Meanwhile, many Bollywood celebs have wished the superstar on his birthday and shared their working experience.
Check out the birthday wishes below, according to IANS.
Preity Zinta
Aamir has always been very focused on his work, dedicated, sweet, a bit mad and a lot of fun. We had a lot of fun working in "Dil Chahta Hai". It was a youthful film. And we were all young, and raring to go. All of us had a ball working on it.
Urmila Matondkar
It was wonderful working with Aamir (in "Rangeela"). The best thing about working with him is that you can explore any number of ways of approaching the same scene and then working out the best possible way of executing that scene. I wish him many more successful films.
Rajkumar Santoshi
The Aamir that I know is honest, sincere, and a hardworking actor, a sensitive person and a true friend.
John Matthew Matthan
The Aamir that I know is a great guy to know and work with.
Amisha Patel
Everyone knows Aamir to be a perfectionist. But only those who have worked with him can vouch for his integrity. I am one of the lucky heroines who had the privilege of doing one of my most important films "The Rising: Ballad of Mangal Pandey" with Aamir. It was at the audition for "Lagaan" that I met Aamir for the first time. I remember he was a superstar. I was a nobody. Yet he treated me so gently and affectionately. I learnt so much just watching Aamir at work. Honesty comes naturally to him. Is he really turning 50? To me he's eternally 22.
Indra Kumar
He is a truly good human being and emotional. He is always there to help family and friends.
Ashutosh Gowariker
The Aamir I know is an enigma.
Vijay Krishna Acharya
The Aamir that I know is normal and naughty.
Prosenjit Chatterjee
You r a grt frnd n undbtdly d most versatile actors of d world.wish u a v happy birthday @aamir_khan many happy returns
Kunal Kohli
Happy Bday @aamir_khan However good an Actor you know him to be.(And he's the best) He's that much better a human being. Love you Aamir
Kamaal R Khan
Wish you very happy birthday Bhai Jaan @aamir_khan Aapke Toh L Lag gaye Bhai. 50 Ke Ho Gaye. Now you will need #SandeKaaOil Bhai Jaan.
