Chappell Roan had a 'Casual' fan waiting after her Bonnaroo performance — Kacey Musgraves

Kacey Musgraves, who has been spotted around the Farm at Bonnaroo throughout the weekend, posted on Sunday a photo with artist Chappell Roan shortly after Roan's set in front of one of the most massive crowds of the weekend.

Musgraves, decked out in a pink dress and head scarf, posed with Roan with the simple caption "casual" referring to Roan's song by the same name.

One follower on Instagram stated the obvious question: "So when's the collab?"

Kacey Musgraves hanging out at Bonnaroo

Throughout the weekend, Musgraves shared photos on her Instagram stories of her on the grounds and checking out artists including fellow Nashvillians Cage the Elephant.

The "Golden Hour" singer recently released her sixth album, "Deeper Well," and is in the middle of a world tour.

This article originally appeared on Nashville Tennessean: Chappell Roan's fan waiting after her Bonnaroo set — Kacey Musgraves