Submitted a ticket yesterday about this.
ticket number is #11141908
What has occurred is that someone working with the textures and meshes at bioware has accidentally rotated the textures so that the knees of all female toons now point in. The 2 black marks and the discolored buttocks area is an additional symptom of this. Those black lines should actually be located underneath the underwear but have been rotated around the hips for each leg so that they are now visible.
Ah that explain why every step your toon takes just look wrong.