Bollywood actor Kriti Sanon, who plays a surrogate mother in her upcoming film Mimi, put on 15 kilos for her role and will go on a diet now – for the first time in her life. Mimi is an official adaptation of 2011 National Award winning Marathi film Mala Aai Vhhaychy. Kriti has shot the portions where she is supposed to look heavier and will now get back in shape for portions where she will look lean,apart from a song