The 79-year-old fashion designer dressed herself in a bright yellow trouser suit to sit on a perch inside the 10-foot high white cage outside the Old Bailey criminal court in London.
Westwood told Good Morning Britain: “I am Julian Assange. I am the canary in the cage. If I die down the coal mine from poisonous gas, that’s the signal.”
The WikiLeaks founder is fighting extradition to the US where he faces trial for 18 offences including conspiring to hack government computers and espionage. If found guilty, Assange could face up to 175 years in prison.
Westwood is one of many celebrity supporters of the 48-year-old Australian who have continued to campaign in his defence during the seven years he spent living in London’s Ecuadorian embassy.
Assange was removed from the embassy and has been held on remand in Belmarsh prison since last September, after serving a 50-week jail sentence for breaching his bail conditions.
Westwood challenged GMB hosts Ben Shephard and Kate Garraway: “Well first of all I just want to say your introduction is the total misrepresentation of Julian Assange which has been going on for some time. None of this is actually true."
She added: "He has been trapped and it has been a collusion of all the governments involved - the USA, Great Britain and Sweden.
"And from the very beginning, starting with a honey trap, he's been completely trapped. It's a set-up organised by the CIA."