If you fancy some online shopping here's a UK list to pick through.
https://www.breastcancercare.org.uk/information-support/facing-breast-cancer/going-through-treatment-breast-cancer/side-effects/side-effects-of-chemotherapy/breast-cancer-and-hair-loss/hair-loss-what-to-wearI bought some really nice hats, which were incredibly cheap, from Anna Bandana. I was dignosed in December and needed sun protection asap!
The beginning is so hideous @RR. It does get better as a treatment plan emerges and then commences. Breathe, and hang in there. K xox