Ranveer Singh was born on July 6, 1985, in Mumbai, India.he had always wanted to be an actor, and after joining school he started participating in the school plays and debates. Once when he had gone for a birthday party, his grandmother asked him to dance and entertain her.he remembers that he suddenly jumped in the lawn and started dancing to the song "Chumma Chumma" from the 1991 Bollywood action film, Hum
In January 2010, Singh was called for an audition for Yash Raj Films (YRF) by Shanoo Sharma, the head of the casting division for the entertainment company. They informed him that it was for a lead role in their venture titled Band Baaja Baaraat, the film being a romantic comedy set around the world of wedding planning. Singh went to Yash Raj for his audition, and was asked to perform two scenes. Singh added, "I was surprised because I knew Yash Raj does not launch new heroes. But I knew they were legitimate and I knew this would be the biggest and most important audition I would ever be giving." Aditya Chopra, the Vice President of YRF, later saw the audition tapes on video and was impressed by Singh's acting, and decided that he fit the part of Bittoo Sharma, the hero of the film. However, the director Maneesh Sharma needed some more convincing and he was called for a few more auditions over the next two weeks until they were completely convinced in his calibre. Sharma would meet him and try to analyze different facets of his personality by asking him to dance, act out emotional scenes, reading with co-actors, reading with the writer as well as camera tests. After the two weeks of testing, Singh was confirmed for the role of Bittoo, with Anushka Sharma playing the female lead.
Shooting started for Band Baaja Baarat in February 2010, with a release date of December 10, 2010. Singh described the role of Bittoo Sharma as "your typical Delhi University ka launda. He is a loafer who is not interested one bit in studies. All he does is fool around with his friends in and around college and do a lot of awaragardi. He is a very chilled out guy full of masti who has no worry whatsoever about his future or career." When Sharma was narrating the script to him, Singh had already decided how he wanted to play the part of Bittoo. But Sharma's biggest concern was that Singh acted well and looked like a boy from Delhi, but did not knew much about the life in that city to convincingly portray Bittoo. Hence during the recce he sent him to stay at the campus of Delhi University. Singh made friends with the students there, and hung out with them thereby getting an idea of how the guys in Delhi behave and how they lead their life. He explained: "Interestingly, I met this guy who was very close to Bittoo. He had the swagger, the way he dressed, spoke, I knew when I met him for the first time, I knew he was my guy. So I studied him for a few days, hung out with him and have made Bittoo like him. He had the attitude and energy of Bittoo. I knew this is as Bittoo as it gets! He was crucial in my preparation of Bittoo!"
Filming ended in September 2010, with post-production continuing and promotions starting in October. Singh did a number of promotional campaigns, alongside his co-stars and the director, including going to the Indian Institute of Technology Delhi and taking part in their annual festival. Prior to Band Baaja Baaraat's release, some pundits had expressed doubts that the film would be successful, citing the middling response to Yash Raj Films' last few productions, the lack of a male star and the fact that the female lead, Anushka Sharma, was by then an "almost-forgotten" actress.However, after its release, Band Baaja Baaraat went on to become a critical and commercial success. Singh's portrayal of Bittoo was lauded. Taran Adarsh from Bollywood Hungama commented: "Debutant Ranveer is the lifeline of [the film]. In fact, the youngster adds a lot of spontaneity and sparkle to his character, which is unsophisticated, but charming. He actually catches you unaware in the emotional moments, which he enacts so well. Here's a talent you just can't disregard." Nikhat Kazmi from The Times of India gave the film three out of five stars, while noting that "As long as you view Band Baaja Baaraat as a loving, heartfelt take on what makes Delhi go dhak-dhak, the film holds your attention.... Performance-wise, the duo do have a spontaneity that is disarming."Anupama Chopra from NDTV also gave teh film the same ratings, while noting "debutant actor Ranveer Singh is pitch perfect in the role of the uncouth but good-hearted small town slacker who is a bit of a duffer when it comes to matters of the heart. Box Office India website reported that the film grossed approximately 21.44 crore after five weeks, making it a box office success. At the 56th Filmfare Awards, Singh won the trophy for Best Male Debut.