Watch Sabrina Carpenter Bring Out Kacey Musgraves At Outside Lands

Sabrina Carpenter performed at Outside Lands in San Francisco on Saturday night. During her headlining set (replacing Tyler, The Creator's canceled one), Carpenter brought out Kacey Musgraves for a '60s-inspired cover of Nancy Sinatra's famous "These Boots Are Made For Walkin'" (a staple cover song of Musgraves' on tour), which you can watch below via some fan-shot video.

Carpenter also did a "Nonsense" outro and teased her forthcoming album Short n' Sweet by reading off of a scroll: "Soon cometh my album, so exciting/ My heart doth pound beneath my breasts, so mighty/ Outside Lands it's like thou art inside me." Watch that below as well via more fan-shot video.