I still look up when I hear the name Charlotte just as I do when I hear my own name.
Charlotte was my maid of honour. (I'm the one in the white dress.)
I realized that I can't think of a single example in fiction where this happens to a character (except for actual identical twins). Most fictional characters don't even have siblings. When a set of identical twins are mistaken for each other in fiction, it is often because they planned it (eg: the Weasley twins from Harry Potter, Bridget & Siobhan from Ringer).
Can you think of any examples in fiction where a character is mistaken for or called by the name of his/her sibling who is not an identical twin?
I think I might use this in a future story. Do you think you might?