I volunteer for a community TV station filming and taking pictures at roller derby bouts. There’s usually a few people in generic pony costumes, but sometimes we get clusters of RDs or Rarities and once even a Celestia. The oddest thing I’ve seen so far is a Lyra style hand warmer, but it’s always good to see fans wearing the colours  
Big thanks to all the peeps who get dressed up and come out to support the sport. Hope to see more in the future