Japanese princess Hisako Takamado has arrived in the Russian city of Saransk, which will host Tuesday's FIFA World Cup match between Japan and Colombia.
The game is set to kick off at the 42,000-seater Mordovia Arena tonight at 10:00pm AEST.
Being the Honorary Patron of the Japan Football Association, Princess Takamado has attended all FIFA World Cups since 1998. She has become the first member of the Japanese Imperial Family to visit Russia since the First World War.
Local authorities have prepared a cultural and excursion program for the princess, who is expected to stay in Saransk, around 320 miles southeast of Moscow, until Wednesday.
Earlier on Tuesday, Princess Takamado visited the Mordovian Erzia Museum of Visual Arts, which holds the world's largest collection of more than 200 works by Russian sculptor Stepan Erzia.
Japan, who have twice made it past the group stage at FIFA World Cups, will take on Poland and Senegal in their other two Group H matches.