Online gamblers are trying to cash in on the possibility that Heather Mills might loose her prosthetic leg while participating in ABC's Dancing with the Stars later this month.

The website www.bodog.blog opened bets on whether her fake leg would fly off during a dance routine making "no" a heavy favorite.

The site has even set some ground rules, her leg "must fall off, not be purposely taken off, during a dance routine for all Yes wagers to be graded a win."

Mills is firing back saying the leg will stay put, and she has an extra just in case!

Mills, who is divorcing former Beatle Paul McCartney, says she is appearing on the show for charity, not to gain public sympathy.