Kate Often Stands Out
If you’ve binge-watched Season 2 of Bridgerton, you will realize that Kate’s gowns are often a different color from the ones worn by Mary and Edwina. As you know, Kate’s mother died when she was very young. Her father then remarried Mary Sheffield and the duo had a daughter named Edwina.
Mary loves Kate as her own despite there being no blood ties but Kate still frequently stands out from the other two women in the family. This could be to highlight her more outspoken and direct personality. It also in a way symbolizes how she feels removed from her family as she struggles to hide her feelings for Anthony.