Heather Mills is planning to change her image and market herself as a vegan health expert.

The estranged wife of Paul McCartney will launch a new online business called I Do Care, which will provide details on how to live a healthier lifestyle - including fitness tips and recipe suggestions. Friends claim that she then wants to come up with her own beauty range to rival Paul's daughter Stella.

A source told the Sunday Mirror: "Heather's new company is going to cause fireworks in the McCartney house. She has been very cunning. On the surface, I Do Care will give her a new - caring - image. It will have information on health, beauty, green issues and veganism.

"But once it is established, she will launch a beauty range to rival Stella's. She will argue there was so much demand for it, she had no choice. But in reality, the pair have always disliked each other and it's her chance to get back at her.

"It's going to put a further wedge between her and the McCartneys. They are also going to be upset that she is trying to promote herself as the new Linda McCartney."