Let's be clear : this shirt look weird. This was one of my first import and I don't know what happened in my head when I released it but I'm not proud of me right now.
I add it in the Ressource Manager because a cleavage shirt with RGB and breasts changing supports is definitely a mod that I want to make. I tried several times to improve the appearance of the collar by taking away the vanilla style but I never do something satisfying. So maybe I will do something better later but for now this is all I can do.