Ring in the new era.

Taylor Swift is wasting no time preparing for her walk down the aisle — at least when it comes to her jewelry.

The “Opalite” singer, 35, wore not one but two diamond wedding bands during her appearance on “The Tonight Show Starring Jimmy Fallon” on Monday, Oct. 6, stacking the sparklers on her left-hand index finger alongside her stunning engagement ring from fiancé Travis Kelce.

Swift chose the East West Set Pear Shaped Eternity Band and the East West Marquise Eternity Band , both from A.Jaffe’s wedding ring collection.

Each features a row of diamonds set into the band, creating a dazzling effect even through the screen — though it was Swift’s Kindred Lubeck old mine-cut engagement ring that host Fallon, 51, joked was “blinding” him.

“It’s crazy, that’s c

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