Friends, family and supporters of Ibrahim Halawa will be handing out hundreds of flowers on O'Connell Street later.
Today marks two years since the Firhouse teen was taken into custody in Egypt during political protesting.
His mass trial alongside hundreds of others has been adjourned eight times.
Somaia Halawa says today's gesture is about asking people to remember her brother:
"So we were given just flowers, 725 flowers, which marks these are the days which Ibrahim has spent in prison. So we'll be giving flowers to people and tell them to pray for him and don't forget him."
