Kiwi popstar Lorde has performed her new songs live publicly for the first time, taking the stage on Saturday Night Live on Saturday (local time).

It was her second time on the show, after a performance with Disclosure in 2015.

She kicked off with upbeat 'Green Light', wearing a tight glittering top and loose black pants, breaking into dance as the stage lit up red during the chorus.

Lorde returned later in the show with mellow ballad 'Liability', which was only released on Friday, in an old-fashioned wedding outfit.

The show was co-hosted by Scarlett Johansson, with Lorde making one brief guest appearance in a skit.

Her new album, Melodrama, will be released on June 16.

Newshub.