In her cover story for Billboard magazine, Charli XCX reveals that she is writing songs for two more superstar artists!

The 22-year-old English pop star is one of music's hottest rising stars, having already scored three Top 10 hits with her solo single, 'Boom Clap,' as well as her collaborations with Icona Pop ('I Love It') and Iggy Azalea ('Fancy'). Billboard reveals that she is currently working on songs for Rihanna and Gwen Stefani, both of whom are expected to release new albums within the next six months.

While not much is known about either track, she revealed to the magazine that Stefani's hit, 'Let Me Blow Your Mind' with Eve, is an inspiration of hers and calls it her "favorite female collaboration that has been released over the past 20 years."

Charli XCX's own album, 'Sucker,' was moved to a Dec. 16th release but the singer has already begun singing songs from the album, including the title track 'Sucker' and another one called 'Famous.'