Singer Ellie Goulding was named best British female star to land the first prize of the night at The Brit Awards tonight.
The 27-year-old - who scored her first number one last year with Burn - took the trophy four years after collecting her first Brit.
The ceremony is the biggest night in the UK music calendar with dozens of stars and thousands of fans gathered at the O2 Arena in London.
Goulding collected her prize from Prince and his group 3RDEYEGIRL who are in the UK to perform a series of intimate surprise shows at well-known venues.
The award-winner told guests: "Thank you so much - I genuinely am in shock - I'm not very good at this at all. This means so much to me - I can't even tell you."
She beat acts such as Jessie J and Laura Marling to the prize.
Arctic Monkeys opened the show with a performance of their track R U Mine? with flaming letters spelling out the name of their fifth album AM.
As ceremony host James Corden took the stage he jokingly turned up with a blazing sleeve which was put out by security staff. And as Prince arrived to read out the nominees he whipped out a phone and took a "selfie" alongside him.
Katy Perry was also among the performers, playing her single Dark Horse with a fluorescent Egyptian themed stage set, flanked by costumed dancers.
Corden even posted the image of himself and Prince on Twitter during the show, captioning it: "Selfie x"
US star Bruno Mars was named best international male act, an award he had previously collected in 2012.
After accepting the prize from Kylie Minogue - who wore a knee-length black rubber dress - and Pharrell Williams, Mars told the audience: "I want to thank the fans. We love coming out here, we love performing for you all."
Four-piece act Bastille collected the prize for best British breakthrough, beating acts such as Disclosure and London Grammar.
Singer Dan Smith - who like the rest of his band were shocked by the win - said: "This time last year I don't think anyone in this room including us even thought we would be here."
Corden - who was hosting the awards for a fourth successive year and is stepping down as regular host - brought whoops from the crowd when he sat with One Direction in a gap between awards, asking them if they had any advice for troubled singer Justin Bieber who is on bail after being arrested for drink and driving offences.
The group's Louis Tomlinson said: "Keep strong and keep doing what you're doing."
Corden spluttered: "Don't keep doing what you're doing Justin - that's the worst advice ever."