Taylor Swift and Selena Gomez were among the stars walking the red carpet at the American Music Awards.
The annual ceremony, where winners are chosen by fan voting, is taking place in Los Angeles.
Swift will be named artist of the decade during the show and arrived to cheers on the red carpet at the Microsoft Theater.
The 29-year-old wore an olive-green dress coupled with a pair of thigh-high boots.
Gomez, who is preparing for the release of a new album, posed for selfies with fans on the carpet.
The 27-year-old wore a tight-fitted fluorescent green dress, with matching heels and a diamond necklace.
Lizzo, who is nominated for new artist of the year, will also perform at the ceremony.
The Juice singer arrived in a ruffled, orange minidress, while holding a miniature handbag designed by Italian fashion house Valentino.
Billie Eilish, 17, burst onto the scene following the release of her debut album When We All Fall Asleep, Where Do We Go? earlier this year.
She is up for six awards, including new artist of the year, and stood out on the red carpet wearing Burberry trousers and a matching top, while covering her face with a beekeeper hat.
Camila Cabello is another who will perform during the ceremony.
She walked the carpet wearing a nude dress with floral embellishments.
Pop star Halsey is nominated for artist of the year, in a category also containing Swift, Post Malone, Ariana Grande and Drake.
She wore a flowing, floral-print gown.
Host for the evening Ciara also walked the carpet.
The singer wore an oversized blue jacket with matching trousers.
British singer Dua Lipa arrived on the carpet with her boyfriend Anwar Hadid.
The 24-year-old wore a strapless, floor-length pink gown complete with thigh split.
Stranger Things star Maya Hawke is preparing for the release of her first album.
At the AMAs, she wore a floor-length black gown with a black lace overlay.