Apparently the protesters at Heathrow airport are to wear suits and dresses as part of a cunning plan (?) to cause chaos.
The Guardian has this:
Activists at the Heathrow climate camp have been told to bring smart clothing as part of a plan to disrupt the airport, it emerged today.
Organiser John Jordan confirmed that an email has been sent to protesters urging them to pack formal clothes and air stewardess uniforms.
He said protesters may choose to target businesses around Heathrow and will use smart clothing to blend in with ordinary workers. But he rejected suggestions that the air stewardess uniforms would be used to infiltrate the airport and breach security.