Louis Tomlinson became the latest One Direction member to embark on a solo career as the singer performed his debut single "Just Hold On," his collaboration with Steve Aoki, on The X Factor UK.
Tomlinson, along with his One Direction band mates – who attended Saturday's performance
This article originally appeared on www.rollingstone.com: See One Direction’s Louis Tomlinson Debut ‘Just Hold On’ on ‘X Factor’