Charli XCX shows off her toned figure in a crop top and high-waisted flares as she takes to the stage at Lollapalooza 2017 in Chicago

She's been a regular on the festival circuit this summer.

And Charli XCX was taking to the stage at Lollapalooza 2017 in Chicago, Illinois on Sunday, showing off her figure in a typically quirky ensemble.

The pop princess, 24, wowed the crowd at Grant Park with a selection of her tunes as she bounded around.

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Centre stage: Charli XCX was taking to the stage at Lollapalooza 2017 in Chicago, Illinois on Sunday, showing off her figure in a typically quirky ensemble

Centre stage: Charli XCX was taking to the stage at Lollapalooza 2017 in Chicago, Illinois on Sunday, showing off her figure in a typically quirky ensemble

Charli sported a simple white crop top, worn tied at the waist to show off her svelte figure.

The brunette paired her T-shirt with a pair of high-waisted flares and some statement accessories.

She sported a chunky silver choker around her neck and matching hoop earrings, setting off the look with round tinted shades.

Trim: Charli sported a simple white crop top, worn tied at the waist to show off her svelte figure

Trim: Charli sported a simple white crop top, worn tied at the waist to show off her svelte figure

Sportswear vibes: The brunette paired her T-shirt with a pair of high-waisted flares and some stamement accessories
Sportswear vibes: The brunette paired her T-shirt with a pair of high-waisted flares and some stamement accessories

Sportswear vibes: The brunette paired her T-shirt with a pair of high-waisted flares and some stamement accessories

Shady lady: She sported a chunky silver choker around her neck and matching hoop earrings, setting off the look with round tinted shades 

Shady lady: She sported a chunky silver choker around her neck and matching hoop earrings, setting off the look with round tinted shades 

The singer is set to release her third album in September of this year.

Charli recently spoke about how her fashion affects her music and revealed that she wrote better music when she put thought into her outfit.

She told Women's Wear Daily: 'I feel like I write a better song when I put an outfit together.

Festival fun: The Fancy hitmaker has been a regular on the festival circuit this summer

Festival fun: The Fancy hitmaker has been a regular on the festival circuit this summer

Animated: The pop princess, 24, wowed the crowd at Grant Park with a selection of her tunes as she bounded around

Animated: The pop princess, 24, wowed the crowd at Grant Park with a selection of her tunes as she bounded around

Leggy: Charli's high rise trousers were straight out of the 70s with their extra wide flares
Leggy: Charli's high rise trousers were straight out of the 70s with their extra wide flares

Leggy: Charli's high rise trousers were straight out of the 70s with their extra wide flares

Work it in white wide legged pants like Charlie XCX

Charlie XCX was spotted rocking out on stage at Lollapalooza in Chicago.

The British beauty was working a 90's inspired ensemble of a tied-front white t-shirt with V Files wide legged pants, Puma sneakers and round sunglasses.

Between the raver-vibes from the pants and the round sunnies, the 90's styling was on point.

Sadly for us, this pair of pants are now sold out but click through to see the rest of the V Files collection.

Also, you can get a similar style in our high street edit down below with picks from A.L.C at the top end and the Missguided are a steal at just $51.

Pair yours with a crop top and skater shoes to get that 90's look everyone is craving this summer.

* PRICES MAY NOT BE AS ADVERTISED

'When you cut a vocal in the studio, you have to cut the vocal as if you're on stage because it's the thing people are going to listen to the most, so I have to feel good and feel in my zone.

'I always wear baggy hoodies with heels, so I can feel a bit bossy.' 

She also revealed that her favourite designers are Vivienne Westwood, Stella McCartney and Moschino.

New music: The singer is set to release her third album in September of this year

New music: The singer is set to release her third album in September of this year

Joining forces: Halsey made a special appearance during Charli's set

Joining forces: Halsey made a special appearance during Charli's set

Crowd pleaser: The British star was one of the big names performing on Day Four of the festival

Crowd pleaser: The British star was one of the big names performing on Day Four of the festival

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