I'm glad I'm not the only one who thought her actual face was different, and it wasn't just the hair and glasses.  (I didn't say anything for fear of people thinking I was nuts) 
I'd say the eyes (especially the upper outline), nose, and mouth are all different.  General shape of the face/jaw is the same, but the tip of the nose doesn't angle up, her brows are different at the inner corners, and the mouth is just totally different (even ignoring lack of lipstick).   Maybe the same people who did episode 8 did Grace in the movie...