Students attend a stewardess skill training for the upcoming 2017 entrance examination for art majors in colleges in Luoyang, central China's Henan Province, January 4, 2017. Along with how to stand, how to sit is also covered in these classes. (Photo by Li Bo/Xinhua/Barcroft Images)

Model Kendall Jenner is seen in SoHo on July 31, 2017 in New York City. (Photo by Splash News and Pictures)

A female brown bear with cubs fishing on Lake Kronotskoye as part of the South Kamchatka, Russia on Sanctuary, August 13, 2017. (Photo by TASS/Barcroft Images)

Bella Thorne is seen in Soho on September 10, 2017 in New York City. (Photo by Splash News and Pictures)

A Burlesque performer onstage during the London Tattoo Convention at the Tobacco Docks, in London, Britain, 24 September 2017. (Photo by Facundo Arrizabalaga/EPA/EFE)

Leigh-Anne Pinnock arriving at Gilgamesh Camden on September 30, 2017 in London, England. (Photo by Flynet Pictures)

American media personality Draya Michele attends #REVOLVEawards at DREAM Hollywood on November 2, 2017 in Hollywood, California. (Photo by Barry King/Getty Images)

A camel is seen as he is being brought for the foot surgery at the Dubai Camel Hospital in Dubai, UAE, December 11, 2017. (Photo by Satish Kumar/Reuters)