Access Hollywood correspondent Shaun Robinson turned up to the glitzy screening wearing bright red contact lenses - so she could look like a vampire from the film.
But the creepy look caught Pattinson off guard and he chuckled, "Jesus Christ! Oh wow, I've gotta compose myself."
Co-star and real-life girlfriend Kristen Stewart was also a little unnerved by Robinson's look - she gasped, "Woah! You're jacking my style right now!"