Billie Eilish put on a casual display as she kicked off Lollapalooza in Santiago, Chile on Friday.
The 21-year-old singer dressed in a beanie and an oversized graphic T-shirt that she wore over a long-sleeved top as she took the stage to perform some of her biggest hits at the music festival.
The Happier Than Ever hitmaker also donned a pair of basketball shorts over bright blue star-embellished leggings.
The young musician, who will make her acting debut in Donald Glover’s psychological thriller series Swarm, accessorized with an array of edgy silver jewelry.
Lil Nas X, 23, was stunning 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 attire: Billie Eilish, 21, kept it casual as she kicked off Lollapalooza in Santiago, Chile on Friday.
Layers: The singer dressed in a beanie and an oversized graphic tee that she wore over a long-sleeved top as she took the stage to perform some of her biggest hits at the music festival
The star-spangled: The Happier Than Ever hitmaker also layered a pair of basketball shorts over bright blue star-embellished leggings.
For her performance, she went for a bold, edgy look with contrasting colors of red and blue.
Eilish donned a white jersey with racing graphics over a red nylon jacket with white and blue stripes on the sleeves.
To match the royal blue details on her top, she rocked a pair of bright blue leggings with white stars.
Over the leggings, the seven-time Grammy winner donned a pair of dark colored basketball shorts.
The talented songwriter was accessorized with fingerless gloves refashioned from the cuffs of a pair of white Nike socks.
Eilish styled her jet black bangs and locks in a casual straight updo under a black beanie with blue flame accents.
To stomp the stage, she donned a pair of red and blue Jordan sneakers.
For jewelry, she opted for an array 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 under her jet black hair.
Eilish opted for minimal makeup while performing to show off her natural beauty.
She looked radiant with a rosy blush and a nude lip.
Another headlining act was Lil Nas X, who made his grand entrance in a dramatic, intricately beaded fringe gown.
Silver Statement: The young musician, who will make her acting debut in Donald Glover’s psychological thriller series Swarm, accessorized with an array of fashion-forward silver jewelry.
Grand Entrance: Another of the two headlining acts was Lil Nas X, who made his grand entrance in a dramatic, intricately beaded fringe gown.
Stunning: The Montero vocalist and rapper then shed the stunning garment to reveal a stunning white crop top paired with sparkly baggy pants
Stunning: Uchis wore a white beaded bustier and the matching leather microskirt with fringe details.
Monochromatic: The Colombian-American songwriter completed her look with a pair of over-the-knee white boots and styled her long, cascading tresses into a high ponytail
Performing her new songs: She recently released her third studio album Red Moon In Venus on March 3.
The Montero vocalist and rapper then removed the stunning garment to reveal a stunning white crop top paired with sparkly baggy pants.
Her backup dancers matched her white ensemble with form-fitting jumpsuits with several revealing circular cutouts and furry knee-high boots.
Uchis, who recently released her third studio album Red Moon In Venus on March 3, wore a white beaded bustier and matching leather microskirt with fringe detailing.
The Colombian-American songwriter completed her look with a pair of over-the-knee white boots and styled her long, cascading hair in a high ponytail.