Sushant, 27, and 24-year-old Parineeti, who play the lead characters of Raghu and Gayatri respectively in the rom-com, were present at the trailer launch ceremony.
"The film is about love, attraction and commitment," said Parineeti.
She said that it was a memorable moment to launch the trailer in a city where the film was shot.
Rajput, who made his debut with 'Kai Po Che', said that viewers will get to see something new and fresh in the film.
'Shuddh Desi Romance' revolves around the concept of love, live-in relationships and its complications.
Directed by Maneesh Sharma of 'Band Baaja Baarat' fame, the movie is slated to hit theatres on September 13.