If it’s a leather bracelet, you can go to any watch shop and ask to replace a bracelet for you. But in case it is a metal bracelet, then you need to ask a jeweler to make it for you. You can even design your watch. My sister does it all the time. She doesn’t like any watches, so she just purchases a watch and a bracelet separately, and ask a jeweler to make it for her. She even sells some of her creations online. Recently she purchased a few bracelets on https://www.chvker.com/collections/hearts and designing a new watch for them. I still cannot imagine how it will look, but I’m really curious about it.
Does your sister make her own watch? Can you share some of her works? I want to get my sister a watch, but she wants something unusual.