Madonna released her 15th studio album, Confessions II in July, which she has been launching at Club Confession events around the world.
After doing so in Los Angeles, London, New York City and Paris, she confirmed she'd be doing the same in Amsterdam, with the city also hosting WorldPride.
However, during her set early on Sunday morning, she was joined for part of it by Australian pop princess Minogue.
The pair performed Love Sensation, a track from Confessions II together, with Minogue later posting on Instagram a behind-the-scenes look at her surprise appearance.
The clip showed Minogue dancing backstage before joining Madonna to dance and sing with her, while the crowd was showered with confetti.
"Thank you everyone at Club Confessions World Pride Amsterdam," she captioned the post.
The pair previously performed together during Madonna's Celebration tour at a show in Los Angeles in 2024.
Earlier in the week Madonna had teased her appearance, sharing a post online in Dutch which read, "IK HEB IETS WAAR IK OVER WIL PRATEN", which translated into English is: "I've got something I wanna talk about."
Ahead of her latest album's release, Madonna confessed to Graham Norton that she was once "a little bit jealous" of Minogue.
"She was so cute," she said.
"I think my ex-husband at the time (Guy Ritchie) had a crush on her, and I was like, 'I'll never be as beautiful as Kylie'."
Following Confessions II's release, it topped charts around the world, including in the United Kingdom, United States and Australia.
11°C