Miley Cyrus Delivers Live Debut of 'Week Without You' & Meaningful 'Party in the USA' Performance at iHeartRadio Festival

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Miley Cyrus performs onstage during the 2017 iHeartRadio Music Festival at T-Mobile Arena on Sept. 23, 2017 in Las Vegas. 

She also covered 'These Boots Are Made For Walkin',' something she's never done before.

As Miley Cyrus approaches the Sept. 29 release date of her highly anticipated LP Younger Now, the 24-year-old singer has been teasing the new material on social media, even unveiling a full new track this past week with "Week Without You." Naturally, when Cyrus took the stage at the iHeartRadio Music Festival in Vegas on Saturday night (Sept. 23), she was eager to share new stuff.

Opening with the Younger Now title track and lovey-dovey lead single, "Malibu," Cyrus then segued to her most recent release from the album, which was seemingly the live debut of "Week Without You" as the song was just released on Sept. 21. She followed that up with a rendition of "These Boots Were Made For Walkin'" -- a tune she'd never performed before, but she said "it just felt right" after putting on the knee-high black heeled boots she wore on stage.


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Along with the new track, Cyrus essentially turned into her biggest hits to date ("Party in the USA") into something much deeper than a party song, declaring "It's not a party in the USA if we don't have equality, unity, justice, compassion, kindness, opportunity, healthcare, education, non-violence. So fuck yeah, it'll be a 'Party in the USA,' you'll see it."

As Cyrus explained, the screens behind her during "Party in the USA" showed phrases and terms that would make the world a better place, like justice and kindness. While Cyrus' version of the song mostly held true to how the original sounds, she added a little bit of her country flair to the track -- further indicating what she has in store with Younger Now, between the country twang and good vibes.

Watch a snippet of the new-and-improved "Party in the USA" below.