Charli XCX will text make-up artist Kali Kennedy with ideas before the beauty expert translates them into a fully formed look.
British singer Charli is behind the huge Brat summer trend seen earlier this year, which was inspired by her album Brat.
Kali has helped shape the 32-year-old's new "sexy, smouldering, almost raunchy, worn-in" aesthetic, and shared with PopSugar just how involved her A-list client is.
She was part of Charli and Troye Sivan's recent joint Sweat tour, and revealed they were a dream to work with.
"Charli, Troye, and Shy(girl, DJ) are the most iconic line-up ever," she gushed. "The word Sweat was no joke - the inspiration behind the looks was that once they sweat off (the make-up), they would still hold up, almost looking sexier. Lots of lip stains and waterproof eyeliner.
"The creative process with all of them usually starts with a text message asking what I think about an idea - tapping into each other's creative realm and speaking that language is most important. We all have a similar taste and energy."
Over the years, the make-up maestro has also worked closely with the likes of Euphoria stars Barbie Ferreira and Alexa Demie.
Labelling her work as "soft with a bit of an edge", it's proved to be a perfect match for Charli.
"Charli loves a sexy, smouldering, almost raunchy, worn-in type of beat," Kali explained. "She is truly a quintessential hot girl."