Tune in to @nbcthevoice & Vote #TeamMiley Vintage Bob Mackie!

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She went through a famous rebellious stage when she cut all her hair off and pranced around without much clothing, but Miley Cyrus oozed elegance on The Voice last night (20 November).

The 24-year-old pop sensation – who is engaged to actor Liam Hemsworth for a second time – stunned onlookers in a flowing fold sequinned gown before taking to her famous red chair for The Voice's Live Top 12 episode on NBC.

Cyrus wore a vintage Bob Mackie dress for the occasion, which channelled old Hollywood glamour with its sweetheart neckline, cinched-in waist and sexy thigh split.

The dress comes as Cyrus continues to ditch her quirky sense of style for more classy choices, and she gave the look a modern twist with her poker straight hair and platform strappy sandals.

Cyrus appeared to be emulating Marilyn Monroe in one clip posted to her Instagram page from the night, where she is seen putting her hands on her waist and pouting.

She captioned it: "Tune in to @nbcthevoice & Vote #TeamMiley Vintage Bob Mackie!"

Many of her fans were quick to praise her new glamorous look, with one of her 73m fans telling her: "Beautiful lady and gorgeous dress ❤️❤️❤️".

While another said: "miley omg you look amazing".

A third added: "sooo gorgeous...".

Cyrus shared another cheeky clip from the night with fellow judge Blake Shelton, who is dating Gwen Stefani and was recently named People's 2017 Sexiest Man Alive.

She flirtatiously captioned the shot featuring the country singer: "@blakeshelton just bein real sexy....."

Shelton, 41, is seen sipping from a cup in the Instagram video while smiling, and fans didn't hold back in the comments section.

One wrote: "Gone to his head ❤️‍♀️" as another said: "You two are just hilarious when your together, Blake is like the uncle you never wanted love you both ".

A third added; "Love him!!! You guys are the best!"

Cyrus' latest appearance comes amid speculation that she and Hemsworth have already tied the knot, as they were spotted wearing matching bands on their wedding ring fingers recently.

NW magazine have also claimed that the couple are longing for a baby, with an insider telling the publication that they are "putting together a nursery" in the singer's Nashville, Tennessee home.

Miley Cyrus
Miley Cyrus posing for the cameras - (File photo) Gabe Ginsberg/Getty Images