Charli XCX flaunts toned pins and flat stomach in tight-fitting crop top and mini shorts during energetic performance in San Francisco  

She's known for her risque - and often outlandish - outfit choices.

And Charli XCX slipped into another skimpy ensemble as she took to the stage in San Francisco on Sunday night.

The 24-year-old flaunted her toned pins and flat stomach in a tight-fitting crop top and mini shorts during the energetic performance.

Working it: Charli XCX slipped into a skimpy ensemble as she took to the stage in San Francisco on Sunday night 

Working it: Charli XCX slipped into a skimpy ensemble as she took to the stage in San Francisco on Sunday night 

Opting for a sporty vibe, the British singer teamed the printed two-piece with a pair of white trainers and a matching pink base ball cap.

She finished off the look with a pair of large hoop earrings and a 90s inspired choker necklace to complement the sequin trim on her shorts.

Wearing her brunette tresses down over her shoulders, Charli accentuated her complexion with a dash of blusher, before adding a berry lipstick.  

Skimpy ensemble: The 24-year-old showed off her flat stomach in the tight-fitting crop top and mini shorts

Skimpy ensemble: The 24-year-old showed off her flat stomach in the tight-fitting crop top and mini shorts

Sporty look:  The British singer teamed the printed two-piece with a pair of white trainers and a matching pink base ball cap
Sporty look:  The British singer teamed the printed two-piece with a pair of white trainers and a matching pink base ball cap

Sporty look:  The British singer teamed the printed two-piece with a pair of white trainers and a matching pink base ball cap 

Touch of sparkle:  She finished off the look with a pair of large hoop earrings and a 90s inspired choker necklace to complement the sequin trim on her shorts

Touch of sparkle:  She finished off the look with a pair of large hoop earrings and a 90s inspired choker necklace to complement the sequin trim on her shorts

It comes as the Boom Clap hitmaker released a mixtape titled Number 1 Angel last month, after the release of her follow-up to 2014 album Sucker was pushed back to September.

Charli recently spoke about her frustration about the delay in releasing her third album, telling The Kidd Kraddick Morning Show in the US: 'I'm like, "We're gonna push it back 'til September?" I made that album, some of it, in like 2015.'

She also revealed her mixtape took just two weeks to finish, saying: 'I just got bored and just made a load of songs and decided to put them out.I work quickly, I am ready to put things out.' 

Talented: The Boom Clap hitmaker released a mixtape titled Number 1 Angel last month 

Talented: The Boom Clap hitmaker released a mixtape titled Number 1 Angel last month 

Busy lady: She recently revealed that the project took just two weeks to finish
Busy lady: She recently revealed that the project took just two weeks to finish

 Busy lady: She recently revealed that the project took just two weeks to finish 

 Frustrations: Charli released the mixtape after the follow-up to her 2014 album Sucker was pushed back to September 

 Frustrations: Charli released the mixtape after the follow-up to her 2014 album Sucker was pushed back to September 

The songstress also recently told The Daily Telegraph that she is proud to be described as a pop artist. 

She said: 'I don't agree pop is a dirty word anymore... maybe for people who are idiots,' she said.

'When you look at what artists are collaborating and what music is on the radio, I would say we are in a really good place, it is exciting.' 

True pro: The British star looked completely at home while on stage on Sunday night  

True pro: The British star looked completely at home while on stage on Sunday night  

Energetic: The songstress was seen jumping around on the stage during the performance

Energetic: The songstress was seen jumping around on the stage during the performance

Fan power: Charli was seen sitting on the shoulders of a delighted audience member during the show
Fan power: Charli was seen sitting on the shoulders of a delighted audience member during the show

Fan power: Charli was seen sitting on the shoulders of a delighted audience member during the show

Bold: The pop star is known for her risque, and often outlandish, ensembles on stage

Bold: The pop star is known for her risque, and often outlandish, ensembles on stage

Confident: She recently said in an interview that she's proud to be described as a pop artist
Confident: She recently said in an interview that she's proud to be described as a pop artist

Confident: She recently said in an interview that she's proud to be described as a pop artist

'Not a dirty word':  She said pop music was in an 'exciting' place, with the artists that are  collaborating and the music on the radio 

'Not a dirty word':  She said pop music was in an 'exciting' place, with the artists that are  collaborating and the music on the radio 

Capturing the moment: Rapper Brooke Candy was seen taking a picture of Charli from the audience 

Capturing the moment: Rapper Brooke Candy was seen taking a picture of Charli from the audience 

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