I was sitting at a table with a few coworkers of mine and my future sister in law when I was asked about my wedding dress. As I was explaining it, she interrupted me to tell them about the rest of my dress. This isn't the first time, she has also done this with our honeymoon....as I am talking about it. How do I approach this so she knows it's not her wedding and not ok to discuss my wedding without sounding like a jerk.