and Maren Morris brought the star power during day two of the iHeartRadio Music Festival in , on Saturday night.
The dynamic duo hit the stage, along with the likes of pop songstress Chloe Bailey and reigning punk rock princess .
Halsey - who uses she/they pronouns - sizzled in a classic LBD that showcased her endless legs and sculpted shoulders.
It had an edgy one-strap design that was made out of silver chainlink.
It put their vast collection of tattoos on display and featured a sheer black overlay and flattering ruching at the waist.
The mother-of-one, 27, slipped into a pair of black satin knee-high boots with a generous heel that gave her petite frame a boost.
Their auburn pixie cut was softly styled and bold black eyeshadow was swiped across her lids.
Halsey rocked a myriad of shiny silvery jewelry and an edgy ox blood manicure.
During her red carpet stint, the Without Me hitmaker showcased her versatility as she alternated from brooding for the camera to striking a playful pose or two.
Morris flaunted her enviable hourglass shape by modeling a sparkling brown sequin shift dress for shutterbugs ahead of the concert.
The country songstress, 32, had a radiant, sun-kissed glow and she showed off her bright white pedicure in a pair of lace-up sandals.
Her lightened brunette hair was parted down the middle and worn in voluminous beach waves.
She cozied up to her hunky husband Ryan Hurd, who towered over her in a pair of light denim jeans and a suede shoes.
The singer looked casual-cool as he completed his look with a plain white tee and a lightweight jacket covered in patches.
Chloe Bailey looked like the ultimate pop star in a trendy gray cut-out top styled with black joggers and leather slide sandals.
The singer, who took the stage during the daytime, puckered up for the cameras before slipping into her stage costume.
Emmy-winner Sheryl Lee Ralph put on an animated display as she hit the red carpet in a flashy camouflage print blazer and a Gucci belt.
The Abbott Elementary star, 65, styled her vibrant upper half with a pair of wide-legged denim jeans.
Leslie Jones and Michelle Young put on busty displays in dueling bodycon dresses, with the SNL alum opting for a skintight midi and the Bachelorette star going bold in blue.
Genevieve Parisi and Victoria Fuller flashed their toned tummies in dueling crop top and baggy high-waisted trousers.
Becca Tilley and girlfriend Hayley Kiyoko looked effortlessly cool as the loved-up duo paired oversized jackets with ultra mini skirts.
Real Housewives Of Beverly Hills star Kyle Richards was a total smoke show in a busty strapless dress as she cozied up to singer Morgan Wade and former co-star Teddi Mellencamp.
The Halloween actress's silky brunette hair flowed down her chest in loose curls and she opted for an ultra glam makeup look.
Blonde bombshell Teddi displayed her enviably toned arms in a skintight black vinyl one-shoulder dress.
Katherine McNamara flaunted her supermodel figure in a black cut-out dress and thigh-high black suede boots.
LL Cool J oozed confidence in a bright orange vinyl jacket and brown cargo pants while country singer Luke Combs rocked his signature trucker hat and black button-up for the occasion.
Marcus Mumford of Mumford & Sons looked handsome as he graced the red carpet in a stylish purple suit and plain black tee.