Koffee With Karan 7: Sonam Kapoor forgets Ranbir Kapoor's film name Brahmastra calls it 'Shiva No.1'; leaves Arjun Kapoor highly embarrassed

Koffee With Karan 7: Sonam Kapoor made a blunder with Ranbir Kapoor's film made and left brother Arjun Kapoor embarrassed and how.