David Dhawan's son launched along with Mahesh Bhatt’s daughter!

Alia Bhatt, daugther of Mahesh Bhatt

Alia Bhatt, daugther of Mahesh Bhatt

Alia Bhatt, daugther of Mahesh Bhatt

David Dhawan and son Varun

Karan Johar has started shooting for his next directorial endeavor 'Student Of The Year' Tuesday and it coincides with the birthday of director David Dhawan, whose son Varun is making his debut with the film.

'What a wonderful coincidence that David Dhawan's son embarks on his acting career on his father's birthday. Karan had to make a concession and let David drop in to meet his son,' told a source.

Alia Bhatt, daugther of Mahesh Bhatt and Soni Razdan, is also making her debut with the movie.

On the other hand, Mahesh Bhatt confirmed his absence from his daughter's shooting.

'No I won't be there. This is the journey of the alone to the unknown. I will buy a ticket and watch her maiden performance on a single-screen cinema hall when the movie releases. Now that is a moment to look forward to, isn't it?  'This is the stuff that dream launches are made of. Mother Nature has given Alia the looks and the thirst to be a star and Karan has given her a dream launch. What more can she ask for? Now it is up to her to use the opportunity to the optimum,' told Bhatt.

The movie went on floors with an elaborate campus song choreographed by Farah Khan.

Though Farah declined to comment on the song, the buzz is that the three debutantes Varun, Alia and Siddharth Malhotra would be doing a highschool party gig, a la Shah Rukh Khan, Kajol and Rani Mukerji 'Koi mil gaya mera dil gaya' in Karan's directorial debut 'Kuch Kuch Hota Hai'.