Brat Summer lived on at Wembley Stadium, where Dua Lipa welcomed Charli XCX to the stage for “360” Saturday night (June 21) at her second Wembley Stadium gig on the Radical Optimism Tour.

The “Houdini” singer had the London stage lights set to neon green with Charli taking center beside her, fan-captured video from the concert shows.

“I thought I’d bring a friend out,” Dua Lipa teased the crowd on Saturday before the pair performed 2024’s Brat album opener together. “Let me tell you, she is the biggest brat I have ever known.”

Charli’s appearance at Wembley night two follows a surprise on night one from Jamiroquai, who joined Dua Lipa on Friday for a live rendition of “Virtual Insanity,” the English act’s breakthrough single that earned a Grammy for best pop vocal performance by a duo a group in 1998, and a video of the year award at the MTV VMAs the year prior. At Friday’s show, Dua Lipa told that crowd she’d invited someone who’d “really inspired me from the moment that I started making music” and has “been a trailblazer for British music.”

The two-night residency marked Dua Lipa’s first time headlining Wembley, a 90,000-capacity venue.

The two sold-out concerts were made even more momentous for the British-Albanian pop star by a good-luck letter from the Spice Girls.

“Dear Dua,” read the card, which the singer shared in an Instagram slideshow, “We just wanted to wish you lots of luck with your sold out shows at Wembley Stadium … that’s Girl Power!! We love you! The Spice Girls xxxxx.”

Dua Lipa — whose Radical Optimism debuted at No. 2 on the Billboard 200 upon its release in May — next performs in Liverpool, headlining Anfield Stadium for two nights (June 24-25), and then Dublin for one night at Aviva Stadium (June 27). The Radical Optimism Tour will make it to North America with an arena run beginning in September.