Emily Blunt poses as she arrives at the World premiere of "The Girl on the Train" at Leicester Square in London, Britain September 20, 2016. REUTERS/Dylan Martinez

Emily Blunt poses as she arrives at the World premiere of "The Girl on the Train" at Leicester Square in London, Britain September 20, 2016. REUTERS/Dylan Martinez

Emily Blunt arrives at the World premiere of "The Girl on the Train" at Leicester Square in London, Britain September 20, 2016. REUTERS/Dylan Martinez

Emily Blunt chats with Luke Evans as she arrives at the World premiere of "The Girl on the Train" at Leicester Square in London, Britain September 20, 2016. REUTERS/Dylan Martinez

Emily Blunt poses as she arrives at the World premiere of "The Girl on the Train" at Leicester Square in London, Britain September 20, 2016. REUTERS/Dylan Martinez

Emily Blunt poses as she arrives at the World premiere of "The Girl on the Train" at Leicester Square in London, Britain September 20, 2016. REUTERS/Dylan Martinez

Light is cast on a U.S. one-hundred dollar bill next to a Japanese 10,000 yen note in this picture illustration shot February 28, 2013. REUTERS/Shohei Miyano/Illustration/File Photo

U.S. President Barack Obama arrives to address the United Nations General Assembly in the Manhattan borough of New York, U.S., September 20, 2016. REUTERS/Carlo Allegri