Taylor Swift's Era Tour descended on Melbourne last week and Arnott's marked two significant occasions: the 60th birthday of Australia's dunkable choc biscuit, Tim Tam, and the arrival of the pop superstar in Melbourne.

The biscuitmaker distributed free Tim Tams in Melbourne via a limited special 'Tay Tam' edition. Swift, has previously expressed her fondness for the caramel flavoured variant.

Arnott's is no stranger to launching surprising Tim Tam spin-offs. It produced sell-out Tim Tam-scented cologne, scented candles and moisturising cream a few years back - yes people paid.

Last week was not only the beginning of Swift's tour in Melbourne but also National Tim Tam Day on February 16.

A spokesperson at The Arnott’s Group said: "As Tim Tam enters its 60th year, we continue to witness the power and social currency this incredibly indulgent chocolate biscuit has amongst locals and visitors. We are so grateful to each and every fan for making Tim Tam the icon it is today. We hope fans join us in kicking off our birthday celebrations today! We hope one in particular will join us in doing a Tim Tam Slam… maybe in front of over 100,000 fans at the MCG – what more could we wish for?!”