Suggestions by @shootbanana

Fionn Whitehead

as Robb Stark in ASOIAF

Score: -7

Margot Robbie

as Cersei Lannister in ASOIAF

Score: -7

Nathalie Emmanuel

as Marlene McKinnon in the Marauders

Score: +1

Lily James

as Marlene McKinnon in the Marauders

Score: +2

Sophie Skelton

as Lily Evans in the Marauders

Score: +1

Nathalie Emmanuel

as Marlene Mckinnon in Marauders

Score: -7

Lily James

as Marlene Mckinnon in Marauders

Score: -9

Sophie Cookson

as Anne of Cleves in The Six Wives of Henry VIII

Score: +4

Olivia Cooke

as Catherine Howard in The Six Wives of Henry VIII

Score: +3

Medalion Rahimi

as Jasmine in Disney Princesses

Score: +46