Mostly Sunny is a documentary that tells the remarkable story of Sunny Leone, the Canadian-born, American-bred adult film star who is pursuing her dreams of Bollywood stardom.Mostly Sunny is a documentary that tells the remarkable story of Sunny Leone, the Canadian-born, American-bred adult film star who is pursuing her dreams of Bollywood stardom.Mostly Sunny is a documentary that tells the remarkable story of Sunny Leone, the Canadian-born, American-bred adult film star who is pursuing her dreams of Bollywood stardom.