Billie Eilish performed during the first day of the Lollapalooza Brazil festival at the Autodromo de Interlagos in Sao Paulo on Friday night.

The 21-year-old performer appeared to be making the most of her time on stage as she belted out several of her hits for her adoring fans.

The hitmaker – who recently shared several throwback snaps featuring her Swarm co-star Dominique Fishback – was joined by several other artists, including Kali Uchis and Lil Nas X, at the music festival.

Eilish wore a green-and-white football jersey top while performing for her fans.

The Bad Guy singer also wore a striped long-sleeve shirt underneath her outerwear during the performance.

Headliner: Billie Eilish performed during the first day of the Lollapalooza Brazil festival at the Autodromo de Interlagos in Sao Paulo on Friday night

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Enjoying it: The 21-year-old performer appeared to be making the most of her time on stage as she belted out several of her hits for her adoring fans. The hitmaker was joined by several other artists, including Kali Uchis and Lil Nas X, at the music festival

The Grammy-winning performer paired her top with a pair of black-and-white Air Jordan athletic shorts and matching socks.

She added a bit of extra color to her look with a pair of partially bright yellow Nike high-top sneakers.

Eilish accessorized with several sparkling necklaces and rings as she spent time on stage.

The Los Angeles native tied much of her jet-black dyed hair into a pair of braids that fell onto her shoulders.

The hitmaker finished her outfit with an orange-and-white trucker cap that she turned back and forth during the show.

Uchis opted for a form-revealing outfit that included a white top that showcased her toned arms and stomach during the festival.

The 28-year-old singer paired her top with a miniskirt that showed off her thighs a she played for her fans.

The Telepatia singer donned a pair of fuzzy knee-high boots that paired well with her form-revealing tops.

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Standing out Eilish wore a green-and-white football jersey-esque top while performing for her fans. The Bad Guy singer also wore a striped long-sleeve shirt underneath her outerwear during the performance

Ready to go: The Grammy-winning performer paired her top with a pair of black-and-white Air Jordan athletic shorts and matching socks

Fancy footwear: She added a bit of extra color to her look with a pair of partially bright yellow Nike high-top sneakers

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Accessorizing well: Eilish accessorized with several sparkling necklaces and rings as she spent time on stage. The Los Angeles native tied much of her jet-black dyed hair into a pair of braids that fell onto her shoulders

Headwear: The hitmaker finished her outfit with an orange-and-white trucker cap that she turned back and forth during the show

Hot stuff! Uchis opted for a form-revealing outfit that included a white top that showcased her toned arms and stomach during the festival

Sultry: The 28-year-old singer paired her top with a miniskirt that showed off her thighs a she played for her fans

Standing out: The Telepatia singer donned a pair of fuzzy knee-high boots that paired well with her form-revealing tops

She added an element of shine to her outfit with a pair of sparkling silver hoop earrings.

Uchis’ beautiful dark brunette hair was styled up for the length of her show and contrasted perfectly with the lighter tone of her clothing.

Lil Nas X wore a sparkling corset-esque top that featured a pair of suspenders during his performance.

The 23-year-old also wore a pair of loose-fitting white-and-gold pants that added a bit of extra glam to his look.

The Old Town Road singer accessorized with a bracelet and a choker, both of which matched the dominant tone of his top.

At one point, the Grammy-winning performer donned an eye-catching dress constructed of pearl-esque beads.

The performer donned a black wig that added a bit of darkness to his look.

Lil Nas X was also joined on stage by drag queen Pabllo Vittar during his time on stage.

Ooh la la! She added an element of shine to her outfit with a pair of sparkling silver hoop earrings

Making an impression: Uchis’ beautiful dark brunette hair was styled up for the length of her show

Color coordination: The dark shade of the singer’s locks contrasted perfectly with the lighter tone of her clothing

Not alone: Uchis was joined by several backup dancers while performing at the festival

Having fun: The hitmaker appeared to be thoroughly enjoying her time on stage

There he is: Lil Nas X wore a sparkling corset-esque top that featured a pair of suspenders during his performance

Shining bright: The 23-year-old also wore a pair of loose-fitting white-and-gold pants that added a bit of extra glam to his look

Props: The singer brought out a water gun that he played with during his set

Changing it out: At one point, the Grammy-winning performer donned an eye-catching dress

Texture: The hitmaker’s outfit appeared to be constructed of pearl-esque beads

Tying it off: The Old Town Road singer accessorized with a bracelet and a choker, both of which matched the dominant tone of his top

Contrast: The performer donned a black wig that added a bit of darkness to his look

Hanging out: Lil Nas X was also joined on stage by drag queen Pabllo Vittar during his time on stage

One and done: The 29-year-old dancer opted for a black lace dress that showed off his arms and thighs

The 29-year-old dancer opted for a black lace dress that showed off his arms and thighs.

The songwriter also wore a pair of leather knee-high boots while joining the rapper.

The singer’s lengthy black hair remained free-flowing for the length of her time on stage.

Eilish recently starred in an evocative new snapshot for the latest release from her perfume brand Eilish Fragrance.

The pop star was seen getting soaking wet as she gazed enigmatically up into a downpour, her eyes flashing.

Sharpening her features with natural makeup, she wore a billowy black mock-turtleneck that matched her drenched raven hair.

Her fragrance line’s Instagram account posted the snap to advertise its Eilish No. 2 Eau De Parfum, which sells for $72.

Eilish No. 2 first bowed in Billie’s native America in November 2022 and has since also become available for purchase in the UK.

Billie Eilish announces new fragrance in the UK Eilish No. 2

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Plugging away: Eilish recently starred in an evocative new snapshot for the latest release from her perfume brand Eilish Fragrance

At the moment Billie is involved with the 31-year-old alt rock singer Jesse Rutherford, in a romance that has drawn brickbats online because of the age gap.

Last September, before their relationship went public, Billie dished that she experimented with her Eilish No. 2 perfume while seeing someone she was sweet on.

‘When we were home in July, I had a lot of new fragrances and I also had a bunch of new Eilish No.2 samples. So I was playing around,’ Billie told W.

‘There were specific days when I was gonna go hang out with some new friends, and I was gonna go hang out with a person that I kind of was interested in,’ she dished.

‘And I was like: “Ooh, how do I wanna smell?” Usually, the way I smell when I’m gonna go see a person that I’m interested in is such an important part of my choices.’

Plugging the scent, she asserted:  ‘I not only chose this specific one, it was one that I made. I’m not just going to use my products just because they’re my products. I’m gonna use them if I like them, and I’m not going to if I don’t.’

She claimed: ‘And so I wore it that whole week, seeing a person that I liked. And I was very stoked about it. I was like, wow, I really did what I needed to do. So I think Eilish No. 2 really works if you’re trying to be a little flirt.’

Social media has simmered with backlash against Billie and Jesse’s age difference, especially as he may have known her since she was a minor.

Side by side: At the moment Billie is involved with the 31-year-old alt rock singer Jesse Rutherford, whom she is pictured with at this month’s Vanity Fair Oscar Party

Billie Eilish dons dramatic black gown at Vanity Fair Oscars party

On December 18, 2017 a Jesse Rutherford fan account tweeted pictures of Billie and Jesse playfully posing up at a costume party together.

The tweet, which has resurfaced via TMZ, was originally posted on Billie’s 16th birthday when Jesse was 26 years old.

Finneas O’Connell, Billie’s elder brother and co-writer, has since defended her relationship, saying: ‘I want my sister to be happy and safe, and she is a 21-year-old adult perfectly entitled to make her own life decisions.’

Billie has called Jesse the ‘hottest f**king f**ker alive,’ gushing to Vanity Fair that she was ‘really inspired by this person and, you know, he’s inspired by me’ and shrugging off the blowback by maintaining that ‘I am in control right now. I did this.’