Designer Wayne Hemingway said: "Every member of the HemingwayDesign team is thrilled to support Cancer Research UK's Shine event.
"We are pleased that more than 5000 people have already signed-up to take part in the night-time walking marathon.
"Kimberly Wyatt looks absolutely fantastic in the dress.
"We all know someone who has been affected by cancer in some way and want to do our best to help fund research for the generations of people affected by the disease in the future."
Jayne Leggat, Cancer Research UK Shine Event Manager said: "We are thrilled that Kimberly Wyatt and Wayne Hemingway have taken time out of their hectic schedules to support Cancer Research UK.
"Kimberly certainly looked fabulous in the amazing dress and we hope her fans will feel inspired to support Cancer Research UK by signing-up to take part in Shine."
The specially designed dress, which is metallic gold, was adapted from one found in Cancer Research UK's vintage and retro store in Chiswick, London.
Source: Cancer Research UK