It's for the school carnival and the theme is the world cup with each year as a diff country.
They don't have to go footie themed though, just the theme of that country.
I discovered that the Tango apparently comes from Argentina so Dd1 could dress up in a Tango outfit if I knew what one looked like, but have no ideas for Dd2 (mexico).
Ds is going as a red indian cos his nursery class is America.