My object (body and feet) is one mesh. I sculpted the feet using a mirror modifier and then applied this modifier, and then joined the feet to the legs by fusing the vertices.
Now when I parent my mesh to the armature (with automatic weights) the legs are deforming the feet when I pose the legs (see images)
I tried weight painting the feet but it still does the same thing. Is there some vertex data that is pairing the two feet because I used a mirror modifier? Any help would be appriciated!