Just wanted to share some pics of the T-shirt I got at Brian's Christmas Tour 2018 show in Pittsburgh. As of the present, I haven't seen it anywhere online for sale, including the official merchandise site. It was purchased from a bona fide vendor on site at Heinz Hall where the show was held. As beautiful as it is, it doesn't actually glow, that's just the crummy lighting in my house. Anyway, I think it's a great shirt!
Links to the same pics on imgur (larger size)
https://imgur.com/YxOfh7uhttps://imgur.com/RF3kddy