Halsey and Evan Peters dressed up as Sonny & Cher as they made their red carpet debut as a couple on Saturday.
The Without Me singer was linked to the American Horror Story actor in September after they were spotted at a theme park together and she seemingly confirmed their romance by sharing photos of their Halloween outfits from her annual bash on Friday.
However, they took their relationship public on Saturday by attending the American Horror Story 100th Episode Celebration at the Hollywood Forever Cemetery in Los Angeles, where they posed for photographers on the red carpet.
The 25-year-old wore a long dark wig, heavy blue eye make-up and a white one-shoulder satin dress with multi-coloured polka dots, while Evan sported a matching polka dot shirt with a white tuxedo, a mullet-style wig, and a stick-on moustache. Sonny & Cher, the husband-and-wife duo, wore those outfits during an episode of their '70s TV show The Sonny & Cher Comedy Hour.
Halsey uploaded a picture of her look on social media and wrote in the caption, "Been dying to try out a good @cher makeup forever and finally got to!" She also confirmed to a fan on Twitter that she did the make-up herself.
On Friday, the singer attended her annual Halloween party in Los Angeles in a reimagined version of Marilyn Manson from the cover of his 1998 album Mechanical Animals. Evan, 32, dressed up as a fan of the Insane Clown Posse hip-hop duo.
Halsey shared photos of their looks on Instagram with the caption, "Resident goths." In the snaps, she can be seen wearing a white latex bodysuit, white all over her face, striking blue eye make-up, coloured contact lenses, and a bright red wig.