It's the most OTT celebration on the celebrity calendar, and with this year's theme of 'Camp', today's Met Gala hasn't disappointed those who love a bold, borderline ridiculous red carpet.

Wearing four separate looks, Lady Gaga has turned heads at the biggest fashion event of the year.

The Oscar-winner, 32, sported a billowing Brandon Maxwell-designed gown on the dusty pink-coloured carpet in New York, before removing the top layer, to reveal a strapless black dress underneath.

But it didn't stop there. The A Star is Born actor went a step further, emerging in a figure-hugging fuchsia frock, before stripping down to her bra, knickers, and a pair of fishnet stockings teamed with huge platform boots.

She is truly living up to this year's theme Metropolitan Museum of Art Costume Institute's theme "Camp: Notes on Fashion", with Vogue describing it as a "feather and flounce-filled fantasia".

The event, staged by US Vogue editor-in-chief Anna Wintour, is being co-chaired by Gaga, along with Gucci creative director Alessandro Michele, Harry Styles and Serena Williams.

There's one word for that entire spectacle: CAMP. Lady Gaga, chantay you stay.

Also nailing the camp theme: Pose star Billy Porter, who arrived like Cleopatra, being carried aloft by a slew of hunky helpers:

Porter delivered the drama even after he dismounted his throne:

Also up for a stunt: Jared Leto, who brought his own decapitated head as a date. Fun!

It's everyone's favourite Muppets cast members, Kylie and Kendall Jenner:

Cardi B wins the award for biggest train in this incredible blood-red number:

Janelle Monae's outfit is INCREDIBLE - the eyelash adorning her top even blinks:

In a very on-brand case of doing The Most, Katy Perry has arrived dressed as a chandelier:

In true Kim Kardashian West fashion, the reality star has turned up to the Met Gala leaving very little to the imagination.

The 38-year-old business mogul, a red-carpet regular at the annual event, walked the pink carpet in a completely sheer, wet-looking short bodycon dress.

Fit with plunging neckline and dangling crystal details, Kardashian West paired her dress with wet, wavy hair and dramatic smoky eyes.

Celine Dion is here looking exactly as you'd expect Celine Dion to look at a Camp-themed Met Gala.

God I love this day. Guys, isn't this just the best day?

Gigi Hadid is covered from head to toe:

Serena Williams looks gorge in this embellished yellow dress:

Vogue's European editor-at-large Hamish Bowles is a man unafraid of colour:

Here's a glam-goth Laverne Cox:

Those are the highlights so far - check out every arrival in our comprehensive Met Gala red carpet gallery: