An Aymara woman with a sheep waves to the crowd during a Christmas parade in La Paz, Bolivia December 12, 2015. (Photo by David Mercado/Reuters)

A man dressed as Santa Claus sits at a bus stop before an annual race in Belgrade, Serbia December 27, 2015. (Photo by Marko Djurica/Reuters)

A man rides a horse at a playground on a hill in Kabul April 19, 2015. (Photo by Mohammad Ismail/Reuters)

Turkish artist Nezaket Ekici performs a live art performance entitled 'Emotion in Motion' on the first day of Art Basel 2015, Hong Kong, China, 13 March 2015. The Hong Kong show of Art Basel features 233 galleries from 37 countries and territories, presenting works ranging from the Modern period of the early 20th century to the most contemporary artists of today, according to the official press release. (Photo by Alex Hofford/EPA)

A boy dressed as the Star Wars character Darth Vader attends a Star Wars themed church service, at the Zion Church in Berlin, Sunday, December 20, 2015. About 500 people, some carrying light saber props or wearing Darth Vader masks, attended the service, more than twice as many as usual on a Sunday. (Photo by Markus Schreiber/AP Photo)

A model is photographed backstage before he BCBG MAX AZRIA Fall 2015 collection is modeled during Fashion Week, in New York, Thursday, February 12, 2015. (Photo by Richard Drew/AP Photo)

A model displays a creation for designer Andres Sarda's Fall/Winter 2015 collection, during the Mercedes-Benz Fashion Week in Madrid, February 7, 2015. (Photo by Javier Barbancho/Reuters)

A model walks the runway at the Jacob Birge Vision show during London Fashion Week Fall/Winter 2015/16 at Fashion Scout Venue on February 23, 2015 in London, England. (Photo by Ben A. Pruchnie/Getty Images)