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4 year oldGrammys 2020: Red carpet in pictures
The main nominees include Billie Eilish, Lizzo and Lil Nas X, with performances due from Camila Cabello, Aerosmith and Ariana Grande.
Here's how music's biggest artists looked as they graced the red carpet.
Tonight could be the biggest night of Lizzo's life, which perhaps explains why she looks like she's going to her own wedding.
Her fur-lined Versace dress sees her pay tribute to the likes of Diana Ross and Cher.
Lizzo is up for four of the big awards - record of the year, song of the year, album of the year and best new artist. She'll face stiff competition from Billie Eilish and Lil Nas X in the latter category, but they'll do well to top this look.
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Scottish singer-songwriter Lewis Capaldi is up for song of the year with Someone You Loved.
"Let's face it, it's never gonna happen again," he joked on the red carpet. "It's all downhill from here".
Which is why he's probably steadying himself in this picture.
Ariana Grande is one of the front-runners this year, with her deeply personal Thank U, Next being up for best album.
She wore a custom-made Giambattista Valli gown, which is 20 feet across. So if an impromptu game of musical chairs breaks out, she should win easily.
Lana Del Rey is a contender for album of the year with NFR, as we're diplomatically calling it (the official broadcaster, CBS, has re-christened the album 'Norman Freaking Rockwell').
She looked every bit the winner as she stepped out in this shiny silver number.
Rap star Lil Nas X picked up one of the early awards for best video, in honour of his country-rap crossover Old Town Road (which is also up for song and record of the year) before going and slipping into something a little more... dazzling.
You'd certainly see him coming on the ranch in that pink spiky leather suit.
Like Lizzo, Billie Eilish is also shortlisted for the "big four" awards and she's gone green for Grammys night.
Her Gucci nails were apparently a late addition and hopefully won't cause any trophy-lifting issues for the 18-year-old, who told journalists she feels "like a fan" who has been let in for the night.
BTS were all suited and booted as they walked the red carpet.
The seven-strong Korean band are set to perform their remix "Seoul Town Road" (see what they did there?) alongside Lil Nas X.
It's a case of YOLO, so wear a bright pink cowgirl number, for Bristol artist Yola, who also has four, despite being relatively unknown in her home country (so far).
The Bristolian artist has performed with Phantom Limb, Massive Attack, The Chemical Brothers and Iggy Azalea - and she goes up against Lizzo, Billie Eilish, Lil Nas X and more in the best new artist category.
If they take a team picture with the nominees for that award you'll need your sunglasses to see it.
Continuing the pink theme, Tyler, The Creator arrived at the venue dressed as a bellhop.
"I travel a lot and I appreciate them, so I decided to honour that," he told reporters.
Tyler is up for best rap album for Igor, which he doesn't actually consider to be a rap record himself.
Either way the award trophy would fit nicely into that suitcase.
From bellhop to Porter...
Billy Porter won the Grammy Award for best Best Musical Theatre album back in 2014, and while he's only in town to present an award tonight you will not find a better hat anywhere.
Fact.
Finally, David Crosby got the dickie bow memo before he trod the red carpet with his wife Jan Dance.
One of the original hippy rock 'n' rollers, he was nominated in the best music film category, for his documentary Remember My Name.
The award was eventually won by Beyoncé for her Netflix documentary Homecoming, which captures her 2018 Coachella performance (her win meant films about or by Crosby, Miles Davis, Rick Rubin and Thom Yorke all missed out).
But we're giving the unofficial award for best moustache to the former Byrds guitarist, and we're sure you'll agree.