Billie Eilish in tears as haka, Te Reo cover of 'When The Party's Over' welcomes her to NZ

Pop star Billie Eilish appeared floored by the emotional welcome she received in New Zealand, which included a spine-tingling haka and te reo Māori cover of one of her songs.

Hātea Kapa Haka greeted the 'Bad Guy' hitmaker at Auckland Airport ahead of her Wednesday night concert with a stirring Pōwhiri which left her blinking back tears.

Eilish gasped in astonishment as the group sang a waiata of her song 'When The Party's Over', before she shared a hongi with the performers.

The 17-year-old singer is set to play a show at Auckland's Spark Arena as part of her When We All Fall Asleep World Tour.

The concert is sold out and has seen scalpers attempt to profit off its popularity, with demand for tickets seeing them be advertised on resale websites for almost 10 times their original price.

Promoters have warned fans - and parents of fans - that tickets not bought from Ticketmaster don't guarantee entry to the show.