Watch Stevie Nicks make her grand entrance on 'American Horror Story: Coven'

Fleetwood Mac lead singer Stevie Nicks guest stars on tonight's episode of American Horror Story: Coven, in which Fiona (Jessica Lange) brings Nicks to New Orleans to meet Misty Day (Lily Rabe) as a way to test the potential Supreme. As a bonus, Rabe and Nicks will sing together during the episode!

EW.com has posted an exclusive clip of the episode that features the moment Misty meets the singer, and let's just say she really hits the floor. In the clip, Fiona tells Misty of a skeleton key that will open the door to anything she wishes. She also tells her that being the Supreme comes with a great deal of power and influence, that she will know the world and everyone will want to know her. Fiona then mentions an old friend of hers, a white witch, who turns out to be Stevie Nicks!

Misty immediately faints at the sight of her, and Fiona tells Stevie that the singer owes her five bucks for correctly predicting that the devoted fan would collapse.

According to E! Online, series creator Ryan Murphy said he used Nicks as an inspiration for the Misty Day character and even consulted with the Fleetwood Mac singer about Coven:

"I love her character, she is obsessed with Stevie Nicks. The season really is an allegory and a metaphor for any minority group in the country where you feel alone, so she's a girl that has never known any other witches and all she's ever known is Stevie Nicks," Murphy said. "So I reached out to Stevie Nicks and asked her if we could use her music, and she thought about it for a while and then she said, 'Oh OK, since it's you, I'll do it.'...It's really fun and great and we use I think eight Stevie Nicks songs this year, so that's our musical stuff that we do."