The leaders of France and Britain sported Expo 2020 Dubai wristbands as they welcomed Mohamed bin Zayed, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the Armed Forces, to their capitals this week.
Emmanuel Macron and Boris Johnson were pictured wearing the bands with Sheikh Mohamed.
On Wednesday, Sheikh Mohamed and Mr Macron were pictured at Fontainebleau Palace near Paris with the orange band, which is the colour of the world's fair's Opportunity theme.
In London, Mr Johnson wore a green Sustainability band as he and Sheikh Mohamed were pictured at Horse Guards Parade.
A third band is blue is for Mobility.
Both Britain and France are major participants in the world's fair, with large pavilions set up and some of their best-known brands expected to attend.
The spectacular show kicks off on October 1 and runs for six months.
The wristbands can be purchased at Enoc, Adnoc and Emarat petrol stations.