Is it even a party without Miley Cyrus?

The "We Can't Stop" singer made a surprise appearance at South By Southwest's Fader Fort on Thursday night, bringing heat to the stage with Mike Will Made It. 

The scheduled performance was for "Mike Will Made It and Friends" and as it turns out, Cyrus was one of those "friends."

Cyrus shocked the audience during Mike Will Made It's performance when she came out on the stage in a sparkly army printed mini dress, glammed up with a choker and shiny platform heels. She made her first appearance of the night rapping a verse from Mike Will Made It's song "23."

Following "23," Cyrus appropriately sang her hit song "We Can't Stop," which was produced by Mike Will Made It himself. 

Cyrus was also joined on stage by Mike Will Made It's other "friends," Slim Jimmy and Swae Lee of Rae Sremmurd, who accompanied her singing "Throw Sum Mo."