One Direction star Harry Styles has quipped that their lives are about to start a downward turn.

The group are currently on top of the world after seeing their third album 'Midnight Memories' sell huge amounts.

They are also due to travel the globe on their first ever headline stadium jaunt this year.

However, singer Harry Styles has joked that the only was is down as they begin to get older.

Niall Horan told We Love Pop about gaining social skills: "Like getting on stage - last year alone we did over 100 shows. So that helps with confidence. But I think we've all become our own people now because we're at that age where we're all turning 20 and we are who we are now, I guess."

However, Styles added: "We're over the hill, he's trying to say. It's all downhill from here!"

The first date meanwhile on One Direction's Where We Are stadium tour is due to take place in Colombia on April 25.