The 28-year-old actress, who made her Bollywood debut with "Shudhh Desi Romance," and Ranveer have worked together for the first time in the Aditya Chopra-helmed romantic comedy.
"Ranveer's focus and discipline is amazing. He is very normal when shooting. It can be intimidating for a newcomer to work, who is not very familiar with the way things function, big director and big co-actor.
"The fact that he is so friendly made me feel comfortable. He was just like a friend and which is why I could give my best. I was made to feel that I am no less," Vaani said when asked about what she loved most about working with Ranveer.
The launch became the first ever cinema event to take place at the iconic monument.
Vaani wore a creation by internationally-acclaimed designer Alexis Mabille at the event. Her look was styled by Indian designers Nikhil Thampi and Mohit Rai.
"Befikre", produced by Yash Raj Films, will hit Indian theatres on December 9.