Karan Johar has finalised "Wake Up Sid" fame director Ayan Mukerji to direct his next production venture "Yeh Jawani Hai Deewani", which stars Ranbir Kapoor in the lead role.

"Our film 'Yeh Jawani Hai Deewani' starts this month... directed by Ayan Mukherji and stars Ranbir-Deepika (Padukone) and Aditya Roy Kapur and Kalki (Koechlin)," Karan confirmed on micro-blogging site Twitter.

Music director Pritam will compose the music for the movie. Mukerji created a stir with his directorial venture "Wake Up Sid", about a guy who falls in love with an older girl, played by Konkona Sen Sharma. The romantic comedy with the unconventional pair turned out to be a big hit.