The pop beauty took to the stage in Las Vegas to perform her global smash Without Me.
Dressed in a skintight leather leotard, Halsey, 24, flaunted her trim frame as the celebrity-filled crowd watched on.
Giving a haunting rendition of her emotional track, the starlet could be seen sprawled on the floor with bloodied knees at the start of the track.
Getting to her feet, Halsey revealed she was wearing leather ankle restraints.
As she continued the performance, the openly bisexual star was joined by a female dancer before they performed an intricate artistic dance routine.
Featuring a g-string style back, Halsey flashed her perky behind as she worked her way around the stage.
The track, which peaked at No3 in the UK charts, was rumoured to be about her ex-boyfriend G-Eazy.
The accompanying video even starred a lookalike of the rapper.
Revealing she felt pressure to speak publicly about the split due to the fact she is so open about her personal life, Halsey told Glamour magazine: “The biggest lesson I learned was to make art, not headlines.
“Because it can become quite easy, in the social media generation, to go from being a musician to becoming a personality.”
During the chat, she hinted that Without Me was her way to address the break-up without going on a Twitter rant or releasing a PR-planned statement.
In June last year, Daily Star Online revealed how G-Eazy, whose real name is Gerald Gillum, sent flirty Snapchat messages despite dating the blonde babe.
Despite first being linked to Halsey in August 2017, messages sent in November the same year appeared to show he had a wandering mind.
In one message on November 12, G-Eazy wrote: “Damn… you got some ass on you shorty.”
A mystery user then replied: “Ha thanks. How’s your [aubergine emoji].”
Begging for a dirty snap, he continued: “Lemma see the front tho [eye emoji]”.
In another message sent from his official Snapchat account, G-Eazy revealed his penis size.
The Make Me rapper never commented on or contested the validity of the messages.