The Mamma Mia! actress was spotted with a short, sharp red bob - a far cry from her signature flowing, blonde locks.
But Seyfried has not had a dye job, nor is she the latest A-lister to succumb to the chin-length bob trend - rather the actress was on set for her latest film, Now, in which she plays a gun-toting redhead.
We think the star suits this statement style but we suspect she won't be chopping off her coveted blonde tresses any time soon.
What do you think of Amanda's look? Leave a comment in the box below and tell us your thoughts.
Thinking of becoming a redhead? Check out our beginner's guide to hair colour.