Karan Johar on the Holi song in Yeh Jawaani Hai Deewani

Karan Johar, at the first look launch of 'Yeh Jawaani Hai Deewani', raises laughs as he speaks about being a 'tradition expert' and showing various festivals, including Holi in his recent film 'Yeh Jawaani Hai Deewani'. Don't miss!