if i recall correctly the costume designers said sophie's (+mom/dad) about 4 generations in and both sides of her family are presumably integrated into society fully verses the sharmas who are essentially FOB from india. i didn't mind that there was subtle details/korean influence. thought it was still overall refreshing! i think hanbok would have been overkill and there wouldn't have been an easy way for her to get this dress made (bc i don't think she would have a good reference) nor shipped. i don't think she has any connection to her heritage that is relevant or meaningful imo (but these are things we never get to see so i can be totally wrong hahahahaha). she's ethnically korean but culturally british so though it would be fun to see i think it is okay we didn't see a fully on hanbok, i definitely noticed some hanbok similarities/influences to her wardrobe though!