Fans in kokoshniks have been walking around Moscow, seen in the fan zone on the embankment of the Volga in Volgograd, partying in Samara and at stadiums during matches of the World Cup.
Here in our gallery you can see fans from Colombia, Panama, Denmark, France, Brazil and, of course, Russia.
Historically, a kokoshnik was a Russian headdress worn by married women in the 16th century, though it had a rear part made of fabric, as the woman had to conceal her hair.
Girls and unmarried women wore a headdress very similar to a kokoshnik, but open in the back, called a "povyazka" or a tiara.
A fan of the Russian national team ahead of a match in the World Cup's round of 16 between Spain and Russia.
Fans dance on Manege Square in Moscow.
Fans of the Russian national team ahead of a match in the World Cup's round of 16 between Spain and Russia.
Fans watching the 2018 FIFA World Cup between the national teams of Iceland and Australia in the fan zone on the embankment of the Volga in Volgograd.
A fan of the Brazilian national team ahead of a match in the group stage of the FIFA World Cup between teams Serbia and Brazil.
6/23
© AP Photo / Eugene Hoshiko
Russian fans arrive at the FIFA Fan Fest to watch the round of 16 match between Spain and Russia at the 2018 World Cup in Moscow.
A fan of the Colombian national team ahead of a match in the World Cup's round of 16 between Colombia and England.
A fan of the Danish national team ahead of a match in the World Cup's round of 16 between teams Croatia and Denmark.
A Russia supporter poses while a group A match in the 2018 World Cup between Uruguay and Russia is broadcast on a giant screen at the FIFA Fan Fest in Ekaterinburg.
A girl poses next to the wolf Zabivaka, official mascot of the 2018 FIFA World Cup, ahead of a World Cup match between the teams of Denmark and Australia.
A fan of the Russian national team ahead of a match in the World Cup's round of 16 between Spain and Russia.
Fans of the Russian national team celebrate victory in the group stage match in the FIFA World Cup between the national teams of Russia and Egypt on Nikolskaya Street in Moscow.
Fans of the French national team ahead of the start of the group stage match between the teams of France and Peru.
Fan of the Panamanian national team ahead of a group stage match between the national teams of Panama and Tunisia.
Fans ahead of a group stage match between the national teams of Germany and Sweden.
A fan of the Russian national team ahead of a match in the World Cup's round of 16 between Spain and Russia.
Fans ahead of a match in the World Cup's round of 16 between the national teams of Belgium and Japan.
A fan of the Russian national team during a group stage match between Iceland and Croatia.
19/23
© AP Photo / Victor R. Caivano
Russian fans celebrate winning the round of 16 match between Spain and Russia at the 2018 World Cup in the Luzhniki Stadium in Moscow.
Fans ahead of a group stage match between the national teams of Belgium and Tunisia.
A girl watching a broadcast of a group stage match between teams Russia and Spain on the shore of Artillery Bay in Sevastopol.
A fan of the Colombian national team ahead of a group stage match between the national teams of Senegal and Colombia in Samara.
Fans ahead of a match between Belgium and Japan.
