The 28-year-old singer performed at the opening of Resorts World in Sin City and adjusted the lyrics to her song "Party in the USA" to show her support for the "Toxic" hitmaker, who recently spoke of how she felt the conservatorship she's been under since 2008 is "abusive."
Changing a line which is usually "... And a Jay-Z song was on," Miley chanted, "The taxi man turned on the radio, he turned to me and said, 'Free Britney, Free Britney!"
She then added, "We love JAY-Z, but we got to free this b**ch. It's stressing me the f**k out!(sic)"
This isn't the first time Miley has shared her support for the 39-year-old singer as during her performance at the NFL's TikTok Tailgate Super Bowl Pregame show earlier this year, she shouted, "We love Britney."
And during a concert in Memphis in 2019, she repeatedly sang, "Free Britney."
In 2019, Eve showed up on "The Talk" wearing a "#FreeBritney" T-shirt. "I'm wearing this shirt because we all love her," she declared.
Courtney Love, meanwhile, showed support by revealing that Britney's former manager Lou Taylor tried to put her under a similar conservatorship. "I hope the investigation into the conservatorship going well. I really don't like doing this. But it appears no one else is," she wrote on her social media back then.
She opened up, "In 2010 I threatened you with jury trial if you persisted in trying to take over my estate. I also meant it. I keep my word."
Rose McGowan said, "It's time she gets to be free and live her life on her terms. I hope she's well and I hope she's ok and I love how much her fans love her."
Cher tweeted, "I wish I knew her…I'd go see her, listen, give her a hug, & because unlike those in her life…I want & need nothing from her. In Vegas (where Britney had residency show), ppl have talked about this for long time."