Taylor Swift rocks chainmail mini for surprise performance at The 1975 concert

Taylor Swift made the whole place shimmer in Paco Rabanne during The 1975’s London concert Thursday.Jordan Curtis Hughes/@jordhughes

It’s her, hi.

Taylor Swift made a surprise appearance at The 1975’s concert at the O2 Arena in London Thursday, where she treated the crowd to the first-ever live performance of her “Midnights” track “Anti-Hero.”

And the pop phenom — who also covered The 1975’s song “The City” — made the whole place shimmer in an itty-bitty, disco-worthy Paco Rabanne chainmail dress ($3,950) dripping with layers of gold and silver sequins.

The fashion house’s signature paillette-covered styles, the design for which dates back to the 1960s, have also popped up on stars including Dua Lipa, Sophie Turner and Laura Harrier.

Swift, 33, completed the look with towering Christian Louboutin platform heels ($623, originally $2,495), a simple chain necklace, her go-to red lipstick and, interestingly, the same braided buns she wore during her “Folklore” era, tempering her party-ready mini with something more homespun.

Swift also covered The 1975’s hit “The City” during her surprise appearance. Jordan Curtis Hughes/@jordhughes

“taylor wearing a fearless outfit with folklore hair while playing a midnights song. #TheErasTour is about to be wild,” one fan quipped on Twitter, while another wrote, “did folklore taylor make an appearance? she’s wearing a mirrorball dress with her little folklore buns.”

Indeed, the Grammy winner seems set to serve up the same mixed-genre ensembles when she hits the road in March for her Eras Tour, which she teased on Instagram as “a journey through the musical eras of my career (past and present!).”