Sir Paul McCartney'S estranged wife Heather Mills has been warned she could be humiliated on TV show Dancing With The Stars, by a fellow contestant. Mills is appearing on the reality show in a bid to improve her image - but model Paulina Porizkova warns the experiment could backfire. Porizkova says of Mills - who has been vilified in the British press during her divorce battle with MCCartney - "It's great TV. If Heather comes on and shows how warm and wonderful she is, people are going to go for her. If she doesn't she is screwed."