It is the kind of advertising money can't buy - and beyond the wildest dreams of one Scottish small business owner.

Megastar Taylor Swift was last night spotted out about in New York wearing a dress from Perthshire fashion boutique Little Lies, to the shock of owners Jade and Stuart Robertson.

In what was a thrifty move by Ms Swift, the green crushed velvet dress is just £58 and is sure to become a sell out success for the family firm.

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Ms Robertson could not conceal her delight at learning of her company's newest fan.

She said: “We can’t believe it.

The Herald:

"I think we’re all still in a state of shock to be honest.

"To see one of the most recognisable people in the world wearing one of our designs is insane.

"We were already massive Taylor Swift fans and having her seal of approval means so much to us."

It is a particularly momentous event for the small company, which began in 2015 as an online boutique based in the couple's bedroom.

The Herald:

Ms Swift, fresh from her record-breaking global Eras Tour, was photographed leaving a star-studded dinner with famous friends Blake Lively and Zoe Kravitz.

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The influence of the Cruel Summer singer led to the dress selling out in a matter of hours, but Ms Robertson has been frantically re-stocking the frock today and has it on pre-order in both olive and black.

Designed in Perthshire, all styles are also available in UK sizes 8-24 and, the company said, created in small, sustainable limited runs to aid sustainability.

Ms Swift will visit Scotland in June as she brings her Eras Tour to Murrayfield Stadium in Edinburgh for three nights.

The singer-songwriter has played in the country only once before, visiting Glasgow's Hydro on her 1989 world tour.

While on stage Ms Swift spoke about her Scottish roots, with Caledonian DNA on both sides of her family.

Her great-great-grandfather on her mother's side was born in Scotland in the 1850s, and the 34-year-old may even be of royal blood.

Ms Swift's family can be traced back to Scots king William the Lion, who would be her 26th great-grandfather.

In a further possible Scottish connection, the singer’s paternal grandmother was a Rose Baldi-Douglas - the name Douglas is a Scottish one, thought to derive from the Gaelic dubh glas, meaning "black stream", so it’s likely that the family was of Caledonian descent.

Her choice of outfit has been taken by many of a fans as a hint that Ms Swift is gearing up to release her re-recorded version of her 2017 album Reputation.

The star's former record label, Big Machine, sold the masters to her back catalogue to entrepreneur Scooter Braun, former manager of Kanye West, in 2019.

In response Ms Swift embarked on the process of re-recording her first six albums so that she would own the masters and, in turn, make those purchased by Mr Braun less valuable.

She released Fearless (Taylor's Version) and Red (Taylor's Version) in 2021, with Speak Now (Taylor's Version) and 1989 (Taylor's Version) coming in 2023.

Ms Swift is yet to release re-recorded versions of her self-titled debut and Reputation, her final album for Big Machine.

The latter heavily featured snake imagery in both its promotion and the subsequent world tour which saw the singer perform in front of a giant inflatable snake called Karyn.

Known for leaving hints to her fans, known as 'Swifties', about her future musical direction, many have taken her choice to wear a green dress and snakeskin boots as an indication Reputation (Taylor's Version) is imminent.