Charlotte Emma Aitchison (born 2 August 1992), known professionally as Charli XCX, is a British singer and songwriter. She began posting songs on Myspace in 2008 before entering the London rave scene. Signing a recording contract with Asylum Records in 2010, Charli XCX released a series of singles and mixtapes in the early 2010s. In 2012, she was featured on "I Love It" by Swedish duo Icona Pop, with the song becoming her first number-one hit in the UK and receiving global success. Her debut studio album, True Romance (2013), was released to positive reviews but failed to meet commercial expectations.

In 2014, Charli XCX featured on Iggy Azalea's single "Fancy", which became one of the year's best-selling singles worldwide. The same year, she released "Boom Clap", which became her first solo top-ten single in the US. Her second studio album, the punk-influenced Sucker (2014), spawned the singles "Break the Rules" and "Doing It". She began working alongside producers associated with the UK collective PC Music in 2015, developing a more experimental sound and image. She released the EP Vroom Vroom (2016) and the mixtapes Number 1 Angel and Pop 2 (both 2017). Her third studio album, Charli (2019), produced the hit single "1999". Her fourth studio album, How I'm Feeling Now (2020), was made entirely during the COVID-19 lockdowns and received critical acclaim.

Charli XCX's fifth studio album, Crash (2022), became her first number-one album in the UK and Australia. She contributed the UK top-ten single "Speed Drive" as part of the soundtrack of the 2023 film Barbie. Her sixth studio album, Brat (2024), became her second UK number-one album and was named the best album of 2024 by various publications such as Billboard and Rolling Stone. It spawned the UK top-ten hits "Apple" and "Sympathy Is a Knife", as well as "Guess" which became her second UK number-one single. Brat and its songs earned her eight Grammy Award nominations at the 67th annual ceremony, including Album of the Year, and three wins: Best Dance Pop Recording for "Von Dutch", Best Dance/Electronic Album, and Best Recording Package.

In addition to her solo work, Charli XCX has co-written songs for other artists, including Iggy Azalea's "Beg for It" (2014), Selena Gomez's "Same Old Love" (2015), Blondie's "Tonight" (2017), the Shawn Mendes and Camila Cabello collaboration "Señorita" (2019), and the Sigala and Rita Ora collaboration "You for Me" (2021). She was awarded the ASCAP Global Impact Award in 2024 in recognition of her contributions to pop music, as well as being on 2024 Gold House's most impactful Asian A100 list, making her the first South Asian woman of British Indian origin to be honoured.