Its secret was offering a unique insight into that age-old question: what is it like to be a star? Coleen, Wayne and their children will be expected to do the same.
The cameras will follow Wayne's work as a TV pundit and coach while Coleen will offer a down-to-earth view of what it is like to combine the glamour of a millionaire lifestyle with being a mum to four boys.
The documentary will of course showcase her devotion to her sons with her showing off the "true Coleen", as she did in I'm a Celeb.
Asked about life on the show in Manchester last ...