Special K "#StrengthIs" by Isobar

Katie Piper, Lisa Faulkner and Nicola Roberts have joined Special K's "#StrengthIs" campaign.

The activity runs for six months across digital advertising and social media. An interactive digital billboard will be linked to Twitter at London Waterloo train station in October, featuring Piper, Faulkner and Roberts.

The campaign is supported on TV by a creative for Special K Nourish.