Kalki Koechlin collaborates with Pakistani director Sabiha Sumar!

New Delhi: Bollywood actress Kalki Koechlin who recently visited Karachi, Pakiatan hogged all the limelight for her tour.

However, the real reason is now out in the open. The actress is reportedly teaming up with Pakistani director Sabiha Sumar for a documentary titled 'Azmaish - Trials of Life'.

According to a report in ANI, Sabiha's documentary had been in works for three years and she met Kalki at MAMI (Mumbai Film Festival).

"She (Kalki) struck me as someone who empathises with the world and is concerned about its issues. When I told her about the idea for my film she immediately came on board as the Indian partner," said Sumar.