Brazilian model and actress Alessandra Ambrosio seen wearing a Gucci fanny pack and boots from Dior on April 15, 2018 in Indio, California. (Photo by Timur Emek/GC Images)

People in Kathmandu joke that the face mask has now become part of the national dress – an indispensable accessory in an effort to protect themselves from the dust. Nepal has the worst air quality in the world, according to the Environmental Performance Index. (Photo by Pete Pattisson/The Guardian)

Model Hailey Baldwin is seen walking in Soho on February 10, 2017 in New York City. (Photo by Splash News and Pictures)

Actress Ruby Rose, left, recipient of the Stephen F. Kolzak Award, hands her jacket to presenter Taylor Swift during the 27th Annual GLAAD Media Awards at the Beverly Hilton on Saturday, April 2, 2016, in Beverly Hills, Calif. (Photo by Chris Pizzello/Invision/AP Photo)

Kristen Wiig (2nd L) and Maddie Ziegler (2nd R) dance to Sia's “Chandelier” as the artist (R) stands with her back to the audience while performing at the 57th annual Grammy Awards in Los Angeles, California, February 8, 2015. (Photo by Lucy Nicholson/Reuters)

People wearing Christmas hats bath in a pool of watermelon peel during a Christmas service at a hot spring in Luoyang, Henan province, China, December 24, 2016. (Photo by Reuters/Stringer)

The Northern Lights glow green in a spectacular light show above a field of trees frozen solid with snow. (Photo by Jaak Sarv/Solent News & Photo Agency)

Salt-resistant plants grow in sand made up of small fish bones on the shore of the Salton Sea before sunrise in an area where a controversial development would create a new town for nearly 40,000 people on the northwest shore of the biggest lake in California, the Salton Sea, on March 21, 2012 south of Mecca, California. (Photo by David McNew/Getty Images)