DD went a school history trip which involved dressing up. Teacher told them not to buy anything especially for it. Great, I thought and DD came up with a good outfit using things she and I already had. So, we got to school and found most of the girls dressed almost identically - they'd clearly all bought an outfit. DD got teased for wearing clothes from her wardrobe. I know that if I had bought something it would probably have only been worn once and from experience it's not that easy to pass outfits on. So many people would rather spend a few pounds buying something new on Amazon. AIBU to not have bought a new outfit?