Students from St Andrews University indulge in a tradition of covering themselves with foam to honour the “academic family” on the lower college lawn on October 23, 2017, in St Andrews, Scotland. (Photo by Jeff J. Mitchell/Getty Images)

A woman dressed up for Halloween travels on a Metro train in São Paulo, Brazil on October 30, 2017. (Photo by Cris Faga/Rex Features/Shutterstock)

A long-tailed monkey, wearing jeans and a doll's head perform on the streets of Boyolali, Central Java Indonesia. Primates are used by owners to beg at crossroads, the primate show can earn $ 5 per day. Begging using long-tailed monkeys is opposed by animal lovers community as it is considered to torture and degrade animal health. (Photo by Arief Setiadi/Pacific Press/Barcroft Images)

Andy Saturn dressed in a space outfit walks in through a subway station over memorial day weekend on May 29, 2021 in New York City. On May 19, 2021 all pandemic restrictions, including mask mandates, social distancing guidelines, venue capacities and restaurant curfews were lifted by New York Governor Andrew Cuomo. (Photo by Alexi Rosenfeld/Getty Images)

Pope Francis meets Spider-Man, who presents him with his mask, at the end of his weekly general audience with a limited number of faithful in the San Damaso Courtyard at the Vatican, Wednesday, June 23, 2021. The masked man works with sick children in hospitals. (Photo by Andrew Medichini/AP Photo)

American model Emily Ratajkowski, 30, appeared in perfect shape from the front and back in a teeny hot pink bikini and high heels in Los Angeles on September 4, 2021. The beauty was in LA for a fashion show organised by singer Rihanna. (Photo by Backgrid USA)

A member of the public wears a pandemic face mask ahead of the prime minister announcing the government's Covid-19 winter strategy on September 13, 2021 in Manchester, England. Tomorrow, British Prime Minister Boris Johnson will set out his plan to manage Covid-19 through the winter, including what actions would need to be taken if the NHS hospital system were at risk of being overwhelmed. (Photo by Christopher Furlong/Getty Images)

Girls in floral crowns jump across the bonfire while holding hands during the Kupala Night celebration at the National Museum of Folk Architecture and Life in Pyrohiv, Kyiv, capital of Ukraine. (Photo by Ukrinform/Rex Features/Shutterstock)