Keith Lemon (Leigh Francis) and Kelly Brook walked the red carpet for the comedy film alongside co-star David Hasselhoff.
Copyright: PA Images Ian West/PA WireOther stars in attendance included Ronan Keating, Fearne Cotton and an exuberant Louis Spence.
Keith Lemon The Film sees the Yorkshire entrepreneur head to London and become an overnight billionaire thanks to his lemon phone case invention.
The movie will open in UK cinemas on Friday, August 24.
Watch an NSFW preview clip from Keith Lemon The Film below: