American burger chain In-N-Out Burger popped up in Melbourne today, serving hamburgers, cheeseburgers and double cheese until they sold out in just over an hour and a half, with lines stretching around the block of Little Collins Street.

The go-to burger of the celebrity chef - everybody from Gordon Ramsay to Julia Child, with a bit of Thomas Keller and Anthony Bourdain in between (and not to mention countless movie appearances) - In-N-Out has established a reputation for a loyal customer base and fanatical responses whenever a new store opens. It has averaged about a pop-up per year in Sydney last year and now in Melbourne, with crowds going wild whenever it happens.

We smell a Sydney pop-up coming soon... watch this space.