| Last updated
The one-off special will observe the former Love Island presenter's life before her tragic suicide in February last year, and will feature childhood videos of the star.
You can watch a trailer below:
Caroline's family, alongside close friends and former colleagues, will also speak on camera about the star, as well as discussing their reaction to the events that led up to her death.
In order to promote the documentary, which is expected to air later this year, Caroline's family have shared some never-before-seen photographs of the star, showing her as a little girl and a young and carefree teenager.
One photo shows her posing alongside her twin sister Jody, while another sees the twins in school uniform, standing alongside their mum.
Other snaps released saw a teenage Caroline with her hair cut into a bob as she smiles broadly at the camera.
A second photo saw a happy Caroline as she stood smiling in a white crop top and black jogging bottoms.
The final picture is a black and white snap that sees the TV star as an adult with her head tossed back and her hair spread outwards.
This month marked one year since Caroline died aged just 40, with many of her friends paying tribute to the star.
Presenter Laura Whitmore, who took over from Caroline to host Love Island, said on her radio show: "It doesn't get any easier to comprehend - and sometimes when you can't think of the right words to say a song can feel more appropriate."
Before putting on Imelda May's 'The Glory of Love', the 35-year-old said: "So it will be a difficult time, but I hope a chance to celebrate her memory and this song to those who knew Caroline well is very special. Her family played it at her funeral last year...
"This is one of Caroline's favourite songs. This is The Glory of Love."
Ex-fiance Andrew Brady said as part of a long post on his blog: "Tomorrow is the one-year anniversary of Caroline's death, the person I loved more than anyone I ever thought possible.
"Not a day goes by that I don't think of her, I have some truly incredible memories of her etched on to my mind for eternity."
Meanwhile, ex-boyfriend Lewis Burton added: "One year... I will never forget you," alongside a selfie of the pair together and a broken heart emoji.
If you have been affected by any of the content of this article, please call the Samaritans 24 hour hotline at 116 123.
Featured Image Credit: PA/Flack Family
Chosen for YouChosen for You
Most Read StoriesMost Read