Emily Blunt, Ewan McGregor and Lynn Shelton attend ''Your Sister's Sister' premiere at the Toronto International Film Festival

Emily Blunt, Ewan McGregor and Lynn Shelton attend ''Your Sister's Sister' premiere at the Toronto International Film Festival

(L-R) Director Lynn Shelton and actors Ewan McGregor and Emily Blunt arrive for the premiere of 'Your Sister's Sister' at Ryerson Theatre during the Toronto International Film Festival in Toronto, Canada on September 11, 2011. UPI/Christine Chew