I absolutely adore your games, but I do have to give some light criticism with this update.
As a player, it becomes frustrating when I set my character's appearance, then I find out later that the options provided were not just cosmetic, but have actual consequences that lead to death later in the game no matter what I do, thus forcing me to start over from scratch. I think if the death had come up very soon after setting the appearance, it wouldn't have been as frustrating and would have been a good indicator that I should consider my options more carefully. Setting the death later on in the game feels like an unfair punishment, if that makes sense?
I don't want this to come across as unjust criticism and if you have a reason for this particular death end, I would be very glad to hear it. I apologize if you did already state as much somewhere and I just didn't see it. The only answers I found were on your most recent walk through, which simply stated that my chosen dress was what led to that particular death end.
Thank you for hearing me out and thank you for developing these incredible games! I'm not actually a very big fan of Undertale and have never played it before, but your games are just so well written with such interesting branching paths, I can't help but to keep coming back for more! All the best~