Christian Louboutin revealed the secret behind Taylor Swift’s “unslippable” Eras Tour shoes to InStyle‘s Sally Holmes in his latest exclusive. Louboutin, who has worked with Swift for more than a decade,

As they are dancing for over three hours, comfort is extremely important,” the French footwear designer told InStyle.

Get a sneak peek at the sketch the famous shoe designer created for Swift's tour look, featured in her new Eras Tour book.

Christian Louboutin has revealed the secrets behind making the perfect pair of shoes for the world's highest-grossing tour of all time—The Eras Tour. For her ongoing record-breaking world tour, Taylor Swift wears at least nine different pairs of shoes,