Miley Cyrus shocked fans when she stepped out on stage with a super short cropped haircut and her bust spilling out of her top at a Hollywood concert on Saturday, Dec. 8.

The former "Hannah Montana" star wore an outfit that proved she has grown out of her years as a Disney star.

Cyrus, 20, performed her collaboration, "Decisions", with Israeli producer DJ Borgore at the "Christmas Creampies" concert.

The concert was completely overshadowed by Cyrus' crop pixie haircut, cleavage-baring halter-neck top and exotic backup dancers who provided stripper-style dance moves.

Cyrus' belly-baring top was accented with a belly chain that from went around her neck and draped down to her waist. The 20-year-old's spandex pants gave Cyrus the less flattering "muffin top." She completed the look with over-the-knee animal print hi-heeled boots.

View the photos of Miley Cyrus bra-less in a crop top with a short, cropped haircut here

Cyrus, who is engaged to Australian actor Liam Hemsworth ('Hunger Games"), raised eyebrows at the concert when she danced onstage with sexy backup dancers.

The exotic dancers worked two stripper poles on the stage sporting only G-string underwear and pasties to cover their bare breasts.

Last month, Borgore released a music video for "Decisions" starring Cyrus and Hemsworth.

In the clip, Cyrus tongue-kissed her fiancé who is dressed in a unicorn costume and later has a messy cake fight with Borgore and a porn star.

The adult film star, Jessie Andrews, is Borgore's ex. He is said to have inspired Borgore's song which contains lyrics about "how much b**ches love cake."

The video was filmed at Beacher's Madhouse in Los Angeles.

"During the cake fight, Miley asked me to cake her anywhere but her face," Borgore reportedly told Rolling Stone. "It's clearly not part of my agenda but she's pretty, so I cut her some slack."