Sorry you've been having a hard time.
It always helps me when I can identify the thing that was the trigger. The next part is figuring out why that thing triggered the things that it did.
Something was obviously disturbing you about the clothes / color combination. When working out why something has triggered stuff for me journaling about it can help, also asking questions inside and seeing what comes up.

A few hours ago I went through the figuring out process about something that was triggered this week for me. Different ones journaled their parts in it and then I was able to put it together a bit. It helped. I don't feel triggered anymore. For now at least.

I kinda feel that every time something gets triggered and worked out I claim back a tiny bit more of myself.
I hope that's how it works, anyway.

Good luck.