Swift experienced a stage malfunction causing her to get stuck above the audience

Credit: Kris Connor/LP5/Getty

Just when fans were thinking that Taylor Swift must be running out of surprise superstars to join her stage Squad, she got the crowd roaring with yet another unexpected guest. This time: Lorde!

The 25-year-old pop star invited the New Zealand-born singer to join her performance Monday night during the Washington D.C. 1989 Word Tour stop where Lorde sang her hit “Royals” for thousands of excited fans at Nationals Park.

The pair each toasted the moment on social media, sharing photos of the friends in a happy embrace, donning monochromatic ensembles. (Tay rocked her signature bedazzled white crop-top ensemble, of course.)

“When your friend flies across the world to surprise your crowd with ‘Royals’ because she’s a wondrous angel,” Swift wrote on Instagram.

Alongside not one, but six heart emojis, Lorde posted on her account, “Looking over at my girl like ‘can u believe this is the kind of fun stuff we get to do for a living’ THANKS TAY AND D.C. GETTING TO SING FOR U TONIGHT RULED.”

Lorde wasn’t the only stage surprise for Swift during the evening. The “Blank Space” singer, 25, got stuck on an extendable stage that suddenly stopped working shortly after.

Captured in an Instagram clip by a fan, Taylor can be seen handling the mishap like a pro, telling the crowd, “I’ll just be here forever, stuck up here, unless I choose to jump down. But in the meantime, I’m gonna sing a song for you called ‘Clean,’ and I hope you’ll sing along.”

Lorde is the latest to join Swift’s onstage squad, which is already stocked with a slew of stars including the U.S. Women’s Soccer Team, Nick Jonas, Serena Williams, Orange Is the New Black‘s Uzo Aduba, Gigi Hadid, Kendall Jenner and Behati Prinsloo.

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Swift plays a second D.C. show Tuesday before heading to Soldier Field in Chicago.