Miley Cyrus gave a solo performance in Vegas for the 4th, but she also joined a chorus ... as in the "Free Britney" chorus.
Miley hit the stage for the opening of Resorts World ... as she sang her biggest hit, "Party in the U.S.A." ... she added the Britney Spears chant -- "Free Britney!"
She sang, "The taxi man turned on the radio, he turned to me and said, 'Free Britney, Free Britney!"
The song has lyrics about Jay-Z and Britney ... Miley said, "We love JAY-Z, but we got to free this bitch. It's stressing me the f*** out!"
This isn't the first time Miley's supported Britney. During a performance on the NFL's TikTok Tailgate Super Bowl Pregame show, she screamed out, "We love Britney." She did something similar during a 2019 Memphis concert when she repeated the refrain, "Free Britney."