Last year Siddharth was a contestant on the same show and got nostalgic when he visited the set to promote the movie.
"It is very nostalgic. It is a very good feeling that last year you were a contestant and were sitting there, nervous energies come with the show. Now, to come to promote a film feels really great," Siddharth, said Tuesday on the sets here.
"Jhalak Dikhhla Jaa 7" starts June 7.
"Humpty Sharma Ki Dulhania" has been produced by Karan Johar's Dharma Productions. Karan is also one of the judges on the show.
Directed by Shashank Khaitan, the film stars Varun Dhawan and Alia Bhatt in the lead and hits theatres July 11.