Hi Leah,
So sorry to hear your order has not arrived yet.
I have looked into your tracking details and can see you accidentally had selected UNITED KINGDOM as the country for your shipping address.
Unfortunately, you did not select Express Post shipping because you had created an international address. Subsequently, your order was sent off to the UK.
I have checked the tracking today and can see your parcel has been rerouted and is on its way to you leaving Melbourne sorting facility yesterday. You should receive your parcel this week.
Here's a link to your updated tracking details - Track your parcels - Australia Post
I will update your customer account and change the country in case you want to place an order in the future.
Kind regards, Bedhead Hats Customer Service