Sir Paul McCartney's estranged wife Heather Mills has laughed off speculation over whether her prosthetic limb is likely to come off during filming on US TV's Dancing With The Stars, because she keeps it strapped on tightly. The former model, who lost her left leg when she was hit by a motorcycle in 1993, joked about her false limb with US chat show host Larry King last night (20MAR07). She says, "It comes off very easily but I have a strap on. "If it comes off and hits LEN GOODMAN (judge) then I'll be in trouble." And Mills insists she isn't bothered about websites taking bets on whether her leg will fall off. She adds, "I think it's funny. It's about having a sense of humour."