A few celebrities took to Twitter to share their wishes for the filmmaker. Here is what they said:
Genelia D'Souza: Happy birthday @kjohar25 lots and plenty of love and love today and always.
Kabir Bedi: @kjohar25 Happy Birthday, Karan! Yash could be so happy with all you've achieved! Wishing you decades of fulfillment.
Manish Malhotra: @kjohar25 Happy birthday my dearest friend.
Bipasha Basu: Happy Happy Birthday @kjohar25. Love your spirit! Waiting for essentially the most amazing and anticipated party in a very long time. I LIKE birthdays! Big hug!
Divya Dutta: @kjohar25 AN EXCESSIVELY happy birthday Karan! Big hug and god bless.
Riteish Deshmukh: Wishing my dearest friend @kjohar25 an overly happy birthday. Thanks for always being there for me - LOVE YOU LOADS.
Ronit Roy: @kjohar25 Wish you an overly happy birthday and a life full of all of the love and luck within the world!
Farah Khan (Jewellery designer): Happy Birthday Karan. Wish you a really perfect 40th year with quite a lot of love luck and success. Let's parttttttaaaaaaaayyyyy tonight???
Johar, son of late filmmaker Yash Johar, made his debut as a director with 1998 hit "Kuch Kuch Hota Hai".
He also helmed films like "Kabhi Khushi Kabhie Gham", "Kal Ho Naa Ho", "Kabhi Alvida Naa Kehna" and "My Name Is Khan", and produced others like "Dostana", "Kurbaan" and "GET UP Sid", during which he gave new directors their golden chance.
Johar is likely one of the most loved filmmakers within the Hindi film industry, given his cheerful attitude, wit and grace. No wonder most industry members are kicked about his grand party on the Taj Lands End here Friday night.
These days, he's busy engaged on his next directorial "Student Of The Year".
