Skirt behaving strangely when sitting

Hello Im new to unity and Im having an issue with my skirt when sitting, does anyone know how to fix this problem?

That’s a big rabbit hole, but basically the colliders that are on your avatar (probably) are quite large to avoid your legs to collide to it, that’s not an easy way to fix it.

I can recommend you to check on youtube for tutorials on vrchat skirts, people have good recommendation for that.