One Direction - what will they look like when they're old?

Last updated at 13:09
Niall as an old man

One Direction have been transformed into older characters for their new single 'Best Song Ever'.

Niall as an old man
Prosthetics are used to make Niall look older

Each day their characters will be revealed on Twitter, and today, Niall's transformation has been released by the record label.

With the help of prosthetics, Niall has been transformed into a businessman.

We wonder what Harry, Louis, Liam and Zayn will look like?