Chanel took to the Grand Palais for its spring-summer runway show on Tuesday, marking its return to the soaring glass and steel monument with an eclectic collection of sparkly tweed ensembles and a singing performance from actor Riley Keough.

Turns out, the actress’s surprise rendition of Prince’s “When Doves Cry” was prepped in mere weeks. Here, she details her getting-ready process and what it was like paying homage to an iconic Chanel moment.