Dancing With The Stars is one dangerous competition; Christie Brinkley broke her arm while rehearsing for the show and has had to drop out. With DWTS debuting tonight, the dance show quickly replaced the ageless model with her 21-year-old model daughter Sailor Brinkley Cook.

Reportedly, the break was so bad that Brinkley has to have surgery to her arm and wrist.  Seriously, the NFL has fewer accidents.

Christie with daughter Sailor.