The biggest stars of the music world are walking the red carpet in Liverpool ahead of the MTV Europe Music Awards.
Beyonce arrived wearing a metal cyborg glove, while Take That admitted to nerves. "We don't know what we're doing," joked singer Mark Owen.
Coldplay, Duffy, Britney Spears and Leona Lewis lead the shortlist for the awards, with three nominations each.
Former Beatle and Liverpool native Sir Paul McCartney will also be honoured with the Ultimate Legend award.
He will be presented with the specially-created prize by U2 frontman Bono.
Meanwhile, local band The Wombats will cover Leona Lewis's global hit Bleeding Love during the show.
Other performers include Pink, Duffy, Kanye West, Estelle and Take That.
The Killers who are due to perform their new single, Human, paid tribute to Liverpool.
British pop band Sugababes are among the stars at the ceremony
"This is one of the great musical cities of all time and it's awesome to be here," said frontman Brandon Flowers.
"Everyone you see here - we wouldn't be here without the Beatles."
The singer added that he and his bandmates had taken a Beatles tour while staying in the European capital of culture.
"It's magical to go and see where they grew up," he said.
Katy Perry confessed she was nervous about fronting the MTV show, saying the only events she had hosted in the past were "Scrabble games, board games, Monopoly parties and birthday parties".
And Leona Lewis told reporters she was looking forward to the ceremony because she had been allowed to bring a group of friends with her.
"We're going to party afterwards," she said.
Take That are returning to the event 14 years after they appeared at the inaugural MTV Europe ceremony in Berlin.
Take That performed at the first EMA event in 1994
"We're very excited," said singer-songwriter Gary Barlow.
"We're really looking forward to seeing the Liverpool audiences because this is where pop music began, I think," he added.
Spears, Duffy and Coldplay will all compete in the album of the year category, along with Leona Lewis and Alicia Keys.
Lewis is also up for act of 2008, with Amy Winehouse, Rihanna, Spears and Coldplay.
The former X Factor winner, who will present an award during the show, receives her third nod in the Europe's Favourite Act category.
About 10,000 people will attend the show, and an estimated 30 million viewers are expected to watch the awards on MTV channels around the world.
The ceremony can be seen in the UK from 2100 GMT.