BREAKING: Lorde's Lollapalooza set dramatically cut short

Lorde has had to dramatically cut her Lollapalooza performance short just four songs into her set.

The Kiwi pop star was performing on one of the main stages when her show was shut down just three songs in.

"I'm gonna be back for you I promise," Lorde told the crowd after being told to leave the stage. "I'm sorry I love you I'll be back."

A giant sign saying "extreme weather - evacuate" then flashed up on the festival's screens.

Lorde has since tweeted about the show saying: "f***s sake. i am so gutted guys i don't know what to tell you".