The American starlet – who is dating rapper G Eazy – turned up to the amFAR Gala in a stunning black strapless dress with a daring high split up the side.

However, a guest accidentally stood on the back of her dress, causing a red carpet faux pas that left her completely exposed.

Now, the Halsey wardrobe malfunction has gone viral.

The 23-year-old’s frock was dangerous from the get go, with the starlet channeling her inner Angelina Jolie and flashing plenty of leg as she strutted her stuff into the venue.

However, when a male guest trapped the hem of her skirt under his shoe while walking behind her, disaster struck, causing her to expose her minuscule knickers.

Despite the accidental fashion fail, the blonde beauty managed to keep her cool, even while the paparazzi caught the accident.

Once the He and I singer noticed the unfortunate blunder, she simply gave the man a look, before marching on to have her picture taken.

The bombshell slicked her hair back into a stylish up-do, and added a sexy red lip to complete her chic look.

Halsey – real name Ashley Nicolette Frangipane – later changed into another outfit as she performed for guests.

Other stars to hit up the event included Heidi Klum, Hailey Baldwin and Ashley Graham.

However, a wardrobe malfunction didn’t stop the starlet from continuing to flash the flesh as her second ensemble was equally revealing.

This time, she stepped out on stage in a sheer sparkling frock, which featured a dangerous plunging neckline and cut-out side detailing.

Showing off plenty of skin while she performed, the see-through nature of the outfit also caused the singer to show off her underwear.

Not that she appeared even remotely bothered by the accidental exposure.

It comes after Halsey was recently spotted in New York ditching her bra for maximum titillation.