The brand new series of the Sonya Lennon and Brendan Courtney-hosted Off the Rails begins on RTÉ One tonight, Wednesday October 10, at 8:30pm, with actress and designer Mischa Barton among the guests.

Barton will reveal the five products she cannot live without, including "the dry shampoo that has changed her life".

Episode one sees the debut of the show's new makeover HQ, with two Gardaí the first candidates.

There are also tips and tricks for how to fake a flat stomach and the season's hottest catwalk looks.