Sisters and brothers in Chinese
I know that if you have two older sisters the elder of the two would be 大姐姐 and the younger 小姐姐. I also assume that if you had three older sisters, that the middle of those three would be 中姐姐 (correct me if I'm wrong!), BUT... I was having a conversation with a friend recently and she said, "My mother has 7 younger sisters". This is amazing in itself, but I couldn't help but think how would you say it in Chinese? You wouldn't really do it in English, but then there's not really an equivalent to 大姐姐 or 小姐姐 either.
If you have an answer I would appreciate it...!!!