They boast two of the biggest fan bases in the world.
But it was Shawn Mendes who reigned supreme during the 2017 Europe Music Awards, held inside London's SSE Arena, Wembley, on Sunday night, as Taylor Swift lost out in all five of her categories.
Despite being the most heavily nominated stars of the evening, Taylor - who did not attend the event - was overshadowed by 19-year-old singer Shawn who cleaned up at the awards show.
The chart-topper's latest track, There's Nothing Holdin' Me Back, saw him beat out the likes of DJ Khaled 's Wild Thoughts ft. Rihanna, as well as Ed Sheeran's smash hit, Shape of You. and Daddy Yankee & Luis Fonsi's record-breaking Despacito.
Meanwhile, celebrated American rapper Eminem proved to be the comeback king as he picked up the Best Hip Hop gong.
The Lose Yourself hitmaker was up against the newer faces of hip hop, including Drake, Future, Kendrick Lamar and Post Malone.
Accepting the award, he enthused: 'First off, I want to start off by saying that I'm not really sure how I got this because I've had my album out a few years, but I've got one coming,' before thanking his fans and MTV.
Elsewhere, Kendrick Lamar was presented with Best Video, though the rapper was unable to attend the event, instead thanking fans via a video link.
Thirty Seconds of Mars, who are fronted by American actor Jared Leto, took home the Best Alternative award, which also saw Lana Del Rey, Lorde, The XX and Imagine Dragons among the nominees.
Sharing a slightly political speech, the 45-year-old star told the crowd as he accepted the merit: 'We're from America, a land of immigrants, and we welcome you with open arms.'
There's Nothing Holding Him Back! Shawn Mendes cleaned up just minutes into the MTV European Music Awards 2017, held inside London's SSE Arena, Wembley, on Sunday night
Boasting a full house on the night, Shawn won the Biggest Fans gong, as well as the coveted Best Song and Best Artist.
Boasting a full house on the night, Shawn won the Biggest Fans gong, as well as the coveted Best Song and Best Artist.
Later greeted by host Rita Ora, Jared later shared an awkward exchange with Kurupt FM star Grindah, after the comedian jokingly called him 'Jay Leno'.
Referencing the American chat show host, he quipped: 'I've always wanted to meet Jay Leno,' before laughing to himself.
Clearly unimpressed, Dallas Buyers Club star Jared hit back: 'Sorry, what was your name again?'
Sensational! Game of Thrones star Natalie put on a seriously leggy display in an embellished dress that skimmed the tops of her thighs.
'Grindah,' the People Just Do Nothing star retorted, as Jared mocked: 'I'll get to know it.'
But audiences seemed to pick up on the atmosphere between the two, with one viewer joking: 'Think Jared Leto got a bit paranoid about Grinder looking at him.'
'Genuinely LOL’ed at grinder from #Kuruptfm calling Jared Leto Jay Leno #jokes #MTVEMA2017,' chimed another.
Meanwhile, former Fifth Harmony star Camila Cabello proved her solo career is getting off to a flying start as she picked up the Best Pop award for her debut single, Havana.
Success: Thirty Seconds of Mars, who are fronted by American actor Jared Leto, took home the award for Best Alternative band.
Her win meant that Taylor Swift was dealt another award snub, though it was just one of many for the singer, who recently made her return to the spotlight following her one-year hiatus.
Despite the release of her latest track ...Ready For It?, it seems fans aren't quite as the 27-year-old singer also lost out on the awards for Best Video, Best Look, Best Artist and Biggest Fans.
Elsewhere, Dua Lipa, who was up for three gongs, took home the Best New Artist award.
While Harry Styles might have a reputation for being one of the most stylish members of One Direction, the Sign of the Times singer had his crown stolen by surprise MTV EMAs newcomer and former band mate, ZAYN.
