Participants wearing masks during a hazy day at the Beijing International Marathon in front of Tiananmen Square, in Beijing, October 19, 2014. (Photo by Reuters/Stringer)
A masked reveller hangs from an inflatable balloon during the first day of the carnival in Venice, Italy, January 23, 2016. (Photo by Manuel Silvestri/Reuters)
Miranda Kerr arrives for the 9th Annual G'Day USA Los Angeles Black Tie gala on January 14, 2012 in Hollywood, California. (Photo by Toby Canham/Getty Images)