17 July 1958     Debutantes in the UK were presented at the Royal Court for the last time.
From balls to Bridgerton: a brief history of debutantes and the social season, article from History Extra    https://www.historyextra.com/period/modern/debutante-history-ball-court-queen-charlotte-real-history-fashion/

Debutante, article from Wikipedia     https://en.wikipedia.org/wiki/Debutante

THE DEBUTANT’S BALL  Various recordings on YouTube       https://www.youtube.com/results?search_query=The+Debutante%27s+Ball+song