Billie Eilish put on a casual display as she kicked off Lollapalooza in Santiago, Chile on Friday.
The 21-year-old singer bundled up in a beanie and an oversize graphic T-shirt that she wore over a long-sleeve top as she took the stage to perform some of her most popular hits at the music festival.
The Happier Than Ever hitmaker also layered a pair of basketball shorts over bright blue leggings ornate with stars.
The young musician — who is set to make her acting debut in Donald Glover‘s psychological thriller series Swarm — accessorized with a variety of edgy, silver jewelry.
Lil Nas X, 23, was show-stopping as he also headlined the first night of the three-day festival, and Kali Uchis, 28 — who appeared at the top of the lineup — put on an eye-catching performance.
Casual outfit: Billie Eilish, 21, put on a casual display as she kicked off Lollapalooza in Santiago, Chile on Friday
Layering: The singer bundled up in a beanie and an oversize graphic T-shirt that she wore over a long-sleeve top as she took the stage to perform some of her most popular hits at the music festival
Star-spangled: The Happier Than Ever hitmaker also layered a pair of basketball shorts over bright blue leggings ornate with stars
For her performance, she opted for a bold and edgy look with contrasting red and blue colors.
Eilish donned a white, racing graphic T-shirt over a red nylon jacket with white and blue stripes down the sleeves.
To match the royal blue details in her top, she sported a pair of shiny blue leggings with white stars.
Over the leggings, the seven-time Grammy winner layered with a pair of dark-colored basketball shorts.
The talented songwriter accessorized with fingerless gloves refurbished from the cuffs of a pair of white Nike socks.
Eilish styled her jet black bangs and tresses in a casual, straight hairstyle underneath a black beanie with blue flame details.
To stomp around the stage, she donned a pair of red and blue Jordan sneakers.
For jewelry, she opted for a variety of chunky silver chains around her neck as well as statement rings on each of her fingers.
She also sported a pair of edgy silver hoop earrings that peeked out from underneath her raven black hair.
Eilish opted for minimal makeup while performing to showcase her natural beauty.
She looked radiant in rosy pink blush and a nude lip.
Another headline act was Lil Nas X, who made his grand entrance in a dramatically and intricately beaded fringe gown.
Silver statement: The young musician – who is set to make her acting debut in Donald Glover’s psychological thriller series Swarm – accessorized with a variety of edgy, silver jewelry
Grand entrance: Another of the two headline acts was Lil Nas X – who made his grand entrance in a dramatically and intricately beaded fringe gown
Dazzling: The Montero vocalist and rapper then shed the stunning garment to reveal a dazzling white crop top paired with baggy, shimmering trousers
Stunning: Uchis sported a white, rhinestoned bustier top and the matching leather micro skirt with fringe details
Monochromatic: The Colombian-American songwriter completed her look with a pair of white, over-the-knee boots and styled her long, cascading tresses in a high ponytail
Performing her new tracks: She recently released her third studio album Red Moon In Venus on March 3
The Montero vocalist and rapper then shed the stunning garment to reveal a dazzling white crop top paired with baggy, shimmering trousers.
His backup dancers matched his white ensemble in tight-fitting bodysuits featuring various revealing, circle cutouts and furry, knee-high boots.
Uchis — who recently released her third studio album Red Moon In Venus on March 3 — sported a white, rhinestoned bustier top and the matching leather micro skirt featuring fringe details.
The Colombian–American songwriter completed her look with a pair of white, over-the-knee boots and styled her long, cascading tresses in a high ponytail.