Tube passengers take a selfie next to a London underground roundel designed for the launching of the Night Tubes on display at Oxford Circus underground station in London, Britain, 19 August 2016. The long delayed Night Tubes service launched on 19 August. The 24-hour service will operate on Fridays and Saturdays. (Photo by Hannah Mckay/EPA)

A mahout rides an elephant at Tad Sae Waterfall outside Luang Prabang, Laos July 31, 2016. Protected by the United Nations cultural heritage agency UNESCO, Luang Prabang is one of the most alluring places in the region – a city that evokes old-world romance that has gained a reputation as a travellers' Shangri La. (Photo by Jorge Silva/Reuters)

A participant in the Borodino Battle re-enactment before the show at the Borodino Field in the Moscow Region on September 4, 2016. The Battle of Borodino, fought on September 7, 1812, was a battle fought in the Napoleonic Wars during the French invasion of Russia. The fighting involved around 250,000 troops and left at least 70,000 casualties, making Borodino the deadliest day of the Napoleonic Wars. (Photo by Kirill Kallinikov/Sputnik)

A man uses a scissors to make intricate decorative patterns on a camel's back before displaying it for sale at a makeshift cattle market ahead of the Eid al-Adha festival in Karachi, Pakistan, September 9, 2016. (Photo by Akhtar Soomro/Reuters)

Tourists watch illuminated snow sculptures during the 31st Harbin Sun Island International Snow Sculpture Art Exposition on January 4, 2019 in Harbin, Heilongjiang Province of China. The 31st Sun Island International Snow Sculpture Art Exposition officially opened to public on December 29. (Photo by VCG/VCG via Getty Images)

Japanese women wearing kimonos take a selfie as they attend their Coming of Age Day celebration ceremony at Toshimaen amusement park in Tokyo, Japan on January 14, 2019. Coming of Age Day is a Japanese holiday held every January to celebrate people who have reached 20 – the official age of adulthood in Japan. (Photo by Issei Kato/Reuters)

Demi Rose, the 23-year-old star, who has been dubbed the British version of Kim Kardashian, strolled around the party town of Tulum in Mexico on January 10, 2019 in a peep hole bikini. (Photo by KP Pictures)

American actress and model Christina Hendricks attends NBC's New York Mid Season Press Junket at Four Seasons Hotel New York on January 24, 2019 in New York City. (Photo by Jamie McCarthy/Getty Images)