A model prepares backstage ahead of the David Jones Autumn Winter 2017 Collections Launch at St Mary's Cathedral Precinct on February 1, 2017 in Sydney, Australia. (Photo by Mark Nolan/Getty Images for David Jones)

American model Cindy Crawford, 55, recreated her famous Pepsi advert from 1992 for the University of Wisconsin’s Cancer Care Unit. Limited edition prints of the model, shot by the photographer David Yarrow, have a $40,000 price tag and have raised $1 million. (Photo by David Yarrow Photography)

Cloud inversion taken at Sunrise in Mam Tor, Derbyshire, UK on August 30, 2016. (Photo by David Zdanowicz/REX Shutterstock)

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 faithful prays during the Divine Liturgy by Pope Francis at the apostolic Cathedral in Etchmiadzin, Armenia, June 26, 2016. (Photo by David Mdzinarishvili/Reuters)

Dancers perform during La Paz Fashion Week in La Paz, Bolivia, February 7, 2019. (Photo by David Mercado/Reuters)

Racegoers in fashionable hats attend Ladies Day at Cheltenham Festival on March 15, 2017 in Cheltenham, England. (Photo by David Davies/PA Wire)