Birthday girl Lorde celebrates 6th week at No. 1

Birthday girl Lorde's rapid rise to the top of the music world had her mixing with Hollywood's A-list this week.

The Kiwi pop star, whose single Royals is top of the US music charts for the sixth week in a row, attended the Museum of Modern Art Film Benefit in New York yesterday.

She also performed her smash hit to the star-studded crowd.

She tweeted afterwards: "performed at the moma's film benefit honouring tilda swinton. such an honour, that woman is phenomenal. a true heroine."

Among the celebrities present were actors Ralph Fiennes, Jessica Biel and Drew Barrymore, musician David Bowie and designer Karl Lagerfeld.

Royals is topping pop charts around the world, and the video of it has also had just under 90 million views on YouTube.

Lorde is not just making waves in the entertainment world. Incoming New York Mayor Bill de Blasio walked on stage for his victory speech to the accompaniment of Royals.

While in New York, the 16-year-old singer also tweeted about an interesting exchange with a taxi driver.

"I was in a cab home in nyc and royals came on and I laughed and the driver asked why and I told him it was my song and he said 'mine too!"'

It was retweeted 36,000 times and made a favourite by 56,000 users.

Royals was this morning confirmed at No. 1 on top of the US Billboard charts for the sixth week in a row, holding off Miley Cyrus' Wrecking Ball at No. 2 and Eminem's The Monster at No. 3.

She turns 17 today.