March 18, 2026 || King Carl XVI Gustaf, Queen Silvia, Prince Carl Philip, Princess Madeleine, Christopher O'Neill, Princess Christina, Tord Magnuson, Princess Nathalie of Sayn-Wittgenstein-Berleburg, and Princess Benedikte of Denmark attended an ABBA performance called “Mamma Mia! The Party!”.
The event was hosted to benefit the World Childhood Foundation to celebrate Queen Silvia's 50th year as Queen of Sweden at Grona Lund. Princess Madeleine hosted the event personally to celebrate her mother's jubilee. Madeleine's friends Louise Gottlieb, Lovisa de Geer, and Katti von Horn were also in attendence.