EXCLUSIVE– Jodie Comer, best known for her turn as the 22-year-old mistress/homewrecker in BBC’s ratings phenomenon Doctor Foster, has landed the plum title role in The White Princess, the sequel to the acclaimedhistorical TV drama The White Queen. As with the original, the series will be a co-production between the BBC and Starz, which will air it in the U.S. The White Princess is the latest instalment of Philippa Gregory's Cousins' War novels, chronicling the…