A group of kimono enthusiasts is trying to change people's attitudes about the traditional attire by invading public spaces en masse.

Kimono Jack — a group that takes its name from the Japanese tendency to use "hijack" when referring to flash mobs — calls on anyone with an interest to show up to its events in whatever kimono they have, free of the strict conventions and dress codes that dominate kimono etiquette in modern Japan.

Founder Mihiro Akagi, 39, started the group in Kyoto in 2009 after being inspired by microblogging site Twitter's power to coordinate flash mobs and other events.