A woman poses for a photograph in front of a 3D painting at HK 3D Museum in Hong Kong June 26, 2014. (Photo by Tyrone Siu/Reuters)

Sister Milly Wu (16) and Chloe Wu (18), both students from Manchester pose for photographs at the Hyper Japan 2012 Event at the Earls Court Exhibition Centre on February 24, 2012 in London, England. (Photo by Matthew Lloyd/Getty Images)

In a photo taken on November 27, 2016 a female traffic police officer directs traffic on a road in Pyongyang. Believed to be hand-picked for their looks, Pyongyang's female traffic police are a familiar sight at intersections around the capital, where traffic volumes have noticeably increased in recent years. (Photo by Ed Jones/AFP Photo)

School teachers and staff members take part during an active shooter training at James I. O'Neill High School in Highland Falls, New York, U.S., December 12, 2017. (Photo by Eduardo Munoz/Reuters)

Two and a half year-old Jennifer Martin in tears during a visit to Santa at Harrods department store in London, 10th December 1949. (Photo by William Vanderson/Fox Photos/Hulton Archive/Getty Images)

Artists wearing Japanese traditional clown masks march during the First Konpira Festival at Kotohiragu shrine in Tokyo Wednesday, January 10, 2018. The shrine is dedicated to sailors and seafaring. (Photo by Eugene Hoshiko/AP Photo)

A dancer warms up backstage before the final of the 46th Prix de Lausanne, in Lausanne, Switzerland, 03 February 2018. Launched in 1973, the Prix de Lausanne is an international dance competition for young dancers aged 15 to 18. Closing the six-day event, prizes are awarded to the best of 21 finalists consisting of scholarships granting free tuition in a world-renowned dance school or dance company. (Photo by Valentin Flauraud/EPA/EFE)