I'm getting married next year. Bought my dress a couple of months ago, and it's been living at my mums house away from where DP could see it. I was talking to my gran last night, who accidentally let slip that when she last came to visit both my mum and my sister tried my dress on for fun. I'm really upset and angry; it's supposed to be special but sort of feels less so now somehow. My mum and I have now fallen out as it was "just a bit of fun". I can't believe they would think it was ok! AIBU or overreacting?