Lorde's first concert in years has sold out in seconds.

The New Zealand pop star announced the $20 tickets just six hours before the show was set to begin.

New Zealand fans are green with envy: the gig is at Pappy and Harriet's, a honky-tonk bar and restaurant in southern California

It's the 20-year-old's first proper show since she appeared at Vector Arena in late 2014.

She warned fans via Twitter to keep Friday night free and later tweeted details of the show.

$20 tickets because i'm 20 and because i love you. let's get raucous before coachella on sunday night AHH

— Lorde (@lorde) April 15, 2017

Her promoter said the tickets sold out in under a minute.

Lorde will perform on the main stage at Coachella on Sunday night (US time) before Kendrick Lamar. She first performed at the festival in 2014.