Met Gala 2019: Celebrities reveal their 'campest' looks on the red carpet

The Met Gala, an annual benefit event for the Costume Institute at the Metropolitan Museum of Art in New York, is considered one of the world's biggest fashion events.

It is known for its exclusive guest list, its expensive tickets and - most of all - its extravagant outfits, based on a different theme each year.

This year, that theme was Camp: Notes on Fashion - to coincide with an upcoming exhibition at the Met, inspired by photographer Susan Sontag's 1964 essay, Notes on Camp.

The outfits this year will therefore, like the exhibition, be based on "irony, humour, parody, pastiche, artifice, theatricality and exaggeration".

And showing everyone how it was done at the very start of the night was singer Lady Gaga, who arrived in a billowing pink outfit which was not quite what it seemed at first glance.

See more photos below....

Lady Gaga, one of the event's co-hosts

Met Gala's main host, Vogue editor Anna Wintour

Which was then cast aside in favour of Lady Gaga's third outfit, a slim-fitting pink go

Serena Williams, who is also co-hosting, arrived in a neon yellow gown - with matching Nike trainers

Why wear just one hat when you can wear four, like Janelle Monae

The third co-host is Harry Styles, who wore a sheer black top and high-waisted trousers

Actor Michael Urie has gone for two looks in one

Katy Perry is dressed as a chandelier

Here are newlyweds Priyanka Chopra and Nick Jonas, who are said to have first met at the Met Gala in 2017

Laverne Cox went for a sleek black dress and bold make up

Alessandro Michele, of Gucci fashion house, is the event's final co-host

Singer Billy Porter made an entrance before flexing his wings in front of the crowds

And theatre owner Jordan Roth has, very aptly, turned himself into a theatre hall

Celine Dion, perhaps the original queen of 'camp', did not disappoint

Actor Jared Leto clearly believes that two heads are better than one

US drag queen Aquaria went for painted hair and diamante hand-pieces

Reality TV family the Kardashians were out in force for this year's event

Kenyan actress Lupita Nyong'o smiles for the camera

Actor Ezra Miller shows off some very impressive (and unsettling) make-up art

They were followed down the red carpet by Nick's older brother Joe and his even newer wife, Game of Thrones star Sophie Turner

Bollywood star Deepika Padukone channelled Barbie in a large pink gown

While actor Yara Shahidi has gone all out with the feathers...