Due to go to a spa tomorrow with close friend. Been booked for ages. Texting her today to confirm times etc and she drops into the conversation that a friend of hers (lets call her tracey) has also booked for the same day. I don't know Tracey, have met her briefly so I feel like this really changes the dynamic of the group. And not in a good way for me. I'm also very aware of my weight and size and as ridiculous as it sounds Tracey is very slim which I know will make me feel even more overweight (this is my issue I am aware). So AIBU to be a bit annoyed that the day has effectively been gatecrashed?