Stevie Nicks wore a gold bracelet  with "TTPD" initials, supporting  Taylor Swift's new album.

Fans noticed Nicks wearing the bracelet during her performance at BottleRock Napa Valley.

Nicks bracelet is part of Taylor Swift's "The Tortured Poets Department" merch collection.

"The Tortured Poets Department"  album was released on April 19 and  has 31 songs.

Fans are excited and hope for a  future collaboration between Nicks  and Swift.

Nicks wrote a poem for Swift's TTPD album, included in the CD and vinyl versions.

The poem by Nicks talks about a complicated and almost tragic relationship.

Swift references Nicks in her song  “Clara Bow” on the TTPD album.

Nicks and Swift have a long-standing friendship, performing together at  the 2010 Grammy Awards.

In 2010, Nicks praised Swift for her determination and innocence in a  TIME profile.

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