Lorde's new song is an all-star party featuring Khalid, SZA and Post Malone

Lorde's new single enlists help from some friends. Photo/AP

We already knew Lorde and Khalid were friends - they've sung each other's praises and are touring through Europe together.

But Lorde enlisted more than just Khalid for help on the Homemade Dynamite remix, her latest single released today.

She's also teamed up with breakout singer-songwriter SZA and rapper Post Malone, letting each sing a verse and help out on the hook.

Homemade Dynamite is the latest single from Melodrama, Lorde's highly praised second album.

Both Khalid and Lorde and been teasing that they'd been working on something together.

She courted controversy at the recent MTV Video Music Awards when she gave the song an interpretive dance routine after falling too ill to sing.

Lorde begins a European tour with Khalid shortly, but is due back in New Zealand for a series of solo shows in November.