Sabrina Carpenter fulfilled a childhood wish during one of Taylor Swift's "The Eras" tour shows in Syndey, Australia as the pair performed a duet of "White Horse."

"9-year-old Sabrina singing 'White Horse' would never see this s**t coming! I love you so so so dearly Taylor. Always have always will," the "Nonsense" hitmaker wrote in her Instagram caption.

The post included a carousel of pictures featuring the duo sitting on Swift's piano, which she brings out during the surprise songs set of the show.

According to reports, this is not the first time Carpenter fangirled over the "You Belong With Me' hitmaker.

In August 2009, she tweeted about trying to cop tickets to Swift's concert; "Was trying to enter a Taylor Swift contest to win tickets and a chance to meet her but they said I had to be 13."

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Sabrina Carpenter Goes From Fan to Tour Opener

The "Feather" singer is Swift's opening act for her "The Eras" tour in Latin America, Australia, and Singapore shows.

Fans could not be any happier for Carpenter, an expressed Swiftie since she was a child.

"'WHITE HORSE' AFTER THE COVER 14 YEARS AGO IS INSANE," one wrote, referring to the singer's song cover of Swift's hit song.

The "Fast Times" singer also covered Swift's song, "Picture to Burn" in 2009.

"Taylor loves you like a little sister. She couldn't have chosen a better opener, you were made to sing and be an artist!"

"Throwing up crying you deserve this more than anyone my heart is so full I love u so much."

Aside from "White Horse," Carpenter and the "Love Story" singer also performed a duet of 'Coney Island," a song from Swift's ninth studio album, 'Evermore," released in 2020.

READ MORE: Sabrina Carpenter New Album Coming Soon? Pop Star Teases Next Project

Sabrina Carpenter, Taylor Swift's Friendship Timeline

According to reports, Carpenter and Swift have developed a close bond over the years.

"Taylor Swift posted something when she released her new album in the description of when it dropped and saying like, 'I usually would overthink the songs that I'm going to put out and release. And I just feel like nothing is certain right now and so it just felt right and I wanted to do it,'" Carpenter said.

"And that put me in such a good warm-hearted place where then I could listen to all these songs that I've been making with such a fresh perspective of like, 'You know what, this is how I feel right now in musical form.'"

Aside from being together on tour, Swift and Carpenter have been spotted in several of NFL games to support the Grammy-winning star's boyfriend, Travis Kelce.

READ ALSO: Sabrina Carpenter Tragic Childhood: Pop Star Faced Bullies Just to Pursue Music

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