Christie Brinkley drops out of 'Dancing with the Stars' due to injury, so her daughter is stepping in

8:44am PDT - September 16th, 2019    christie brinkley - CNN

Christie Brinkley's daughter Sailor Brinkley-Cook will be replacing her mom on this season of "Dancing with the Stars" after the supermodel fell and broke her arm during rehearsals, Christie's rep confirms to CNN.