If you're wondering why BRIT Awards is trending on Twitter, well Justin Timberlake, Taylor Swift, Emeli Sande and numerous others all attended the 2013 BRIT Awards. At London's O2 Arena is where the event took place, across the pond Justin Timberlake gave a live performance of 'Mirriors' for the very first time. Taylor Swift turned up the heat for 'I Knew You Were Trouble' and Emeli graced the stage for 'Clown' and 'Next To Me'. The Brit Awards 2013 Complete Winners List is on MTV.com. Full performances below.
