In order to get Kristen Stewart to make this face, the director made her watch the previous three films back to back A Clockwork Orange-style.
I was fortunate enough to watch this film with my sister; Mystery Science Theater 3000 has nothing on Lauren once she's had sugar. Unfortunately, I can barely remember a single gem from our screening now with the exception of Lauren calling dibs on referring to Taylor Lautner as "Jac-abs" in her film review (coming soon, I'm sure...which translates to sometime around next Thursday). My father was also present for this event (although he was smart enough to check out and take a nap about 20 minutes into the film).
I should probably warn all the 13 year old girls out there reading this that I will be throwing out spoilers left and right from this point on. So with that warning, here's The Twilight Saga: Breaking Dawn - Part 1...