A group of students in Dublin will try to break the record for the world's biggest ever selfie this morning.
To beat the record, they need to have 250 people.
Each person has to tag themselves in the photo and the arm of the person taking the selfie has to be visible in the shot.
The previous record is 220 people.
The attempt will take place this morning at Dublin Castle, and will be offiated through Guinness World Records.
It's part of Tech week, the national festival of technology for students.
