The 31-year-old Kapoor lad will be seen playing an 18-year-old detective in his upcoming movie 'Jagga Jasoos'. It's a detective film targeting children too, and reportedly RK has also lost a lot of weight to look the part. <br /> <br />'Jagga Jasoos' marks the debut of Picture Shuru Productions, which is a joint venture of Ranbir Kapoor and director Anurag Basu. The actor will be seen playing an 18-year-old desi Sherlock Holmes in the film, who gradually ages through its series. <br /> <br />A source close to the actor says that Ranbir is very much kicked about playing a teenaged sleuth, where he even had discussed his role with Anurag at length over the last couple of months. <br /> <br />Ranbir Kapoor will be seen romancing with his alleged girlfriend Katrina Kaif in the film. We wonder, if she would also play an 18-year-old girl?
