On May 25, 2025, Lorde made a surprise appearance at Mary's Underground in Sydney during a 'Lorde-themed club night' organized by Sugarush, which left fans in awe.

The pop star, whose real name is Ella Yelich-O’Connor, danced among the crowd, sang along to her hits, and even joined DJ Emma Parke on stage for about 20 minutes.

In recent interviews, Lorde has opened up about her gender identity and personal struggles, with themes reflected in the lyrics of her new album.

Fans shared their excitement on social media, posting videos and photos of the surprise performance, which they described as unforgettable.

DJ Xeimma, who helped organize the event, expressed her gratitude on social media, calling it one of the most rewarding nights of her career.

Lorde's upcoming Ultrasound Tour will kick off in September 2025, although no Australian dates have been announced yet.

This event follows a similar spontaneous performance in Washington Square Park, New York, where she attracted a large crowd after inviting fans via text message.

The event, titled 'What Was That: A Club Night Dedicated to Lorde,' featured DJs playing tracks from her discography, creating a lively atmosphere on a typically quiet Sunday night.

The lead single from the album, 'What Was That,' has already gained traction, reaching the top of Spotify’s US chart, marking her first number one since 'Royals' in 2012.

This surprise appearance comes just ahead of her upcoming album 'Virgin,' set to release on June 27, 2025, marking her first album in four years.

Lorde's appearance was spontaneous and made without prior involvement from her label, EMI Australia, although her security team had checked the venue beforehand.

Despite the staff at Mary's Underground having an inkling of her potential visit due to the security check, her actual appearance was still unexpected.