Blake Lively fans have been on high-alert hoping to catch a glimpse of the starlet since she started filming in Dublin last month.
But you'd want to have your wits about you, or you could easily miss her.
The 30-year-old has been filming in the city centre, but looks completely unrecognisable in a series of messy wigs and unlikely outfits.
Blake lively yesterday in dublin looks like she’s been on a 3 day bender and is off to get a chicken roll, panadol and orange lucozade ???????? pic.twitter.com/7sP56yFc2g
— Kween P (@thekweenp) November 6, 2017
We're used to seeing Blake with long luscious blonde locks and red-carpet ready - a far cry from how her character in spy thriller The Rhythm Section turns herself out.
Blake Lively shooting her new movie 'Rhythm Section' in Dublin on November 4. pic.twitter.com/eOgD6maPEC
— Gossip Girl (@ChuckForBlair) November 5, 2017
Lively was pictured on Sunday night, filming at The Cliff Townhouse decked out in an oversized black coat, heavy brown boots, and a cropped black wig - her character's latest disguise.
Blake Lively Trades in Blonde Hair for Cropped Black 'Do While Filming Upcoming Movie https://t.co/amrHP0dp9J
— People (@people) December 3, 2017
Jude Law is also in town filming the movie, which is set in London but being shot in various locations around Dublin and Wicklow.
The film will definitely be one to look out for - it's produced by the makers of the last eight Bond movies, and Reed Morano (The Handmaid's Tale) is directing.
It's set for release in 2019.