Luc Liu definitely has a sharp jawline, particularly in the region of the jaw angles.
B+ jaw angle grade, and B chin grade.
On the picture where she is smiling, you can see her teeth. This kind of teeth shape is typically feminine in their roundness. Any good anthropologist can determine the gender of a skull just looking at their teeth.
Her teeth are a slightly too big in my opinion, probably because of a ceramic coating.
Images source or copyright: Photo by Lori Conn/ZUMA Press. (©) Copyright 2005 by Lori Conn.
Photo by Glenn Weiner/ZUMA Press. (©) Copyright 2003 by Glenn Weiner.