In a world dominated by two-button slim fit suits, its been a while that I have seen a suit with a double-breasted jacket and even longer since I've seen one done well. Shahid Kapoor wore a double-breasted suit with peaked lapels and satin trims to Karan Johar's birthday bash. The formal white shirt, bow-tie, patent leather shoes and gelled back hair...all perfect.
Double-breasted suits tend to make one appear a bit larger so if you plan on buying one make sure it suits your frame. The peaked lapels on the jacket is a really good choice because they tend to make one look taller. Tom Cruise is the only star that I can think of who is often spotted in a double-breasted suit on the red carpet and mostly with peaked lapel jackets.
The suit has been designed by Kunal Rawal, seen with Shahid Kapoor at party in the picture below.