Amanda Seyfried -- I Blue Myself ... At Movie Premiere

You know how frustrating it can be when you get pen ink on your hand? Well, Amanda Seyfried got some on her forehead ... at a movie screening ... and it was pretty funny.

Seyfried was signing autographs for fans at a screening of her new movie "Lovelace" in New York City ... when she lost control of her blue sharpie, and ended up giving herself a 3rd eyebrow.

Don't worry, she still looks hot ... even after giving herself the Tobias Funke treatment.