So you're at a party, you swapped jackets with someone and now somehow the PM is wearing your custom made jacket? Ok.
End of the night, "can I have my jacket back, please?"
"No."
I don't understand how this part works. Someone can just take your property, decide it has national significance and put it in a museum? Did they compensate him for the jacket? The article doesn't say.
I've seen the jacket at the Maritime museum in Freo, I didn't realise it was basically stolen though.