A video of missing Madeleine McCann will be played at football matches across the UK today to remind people that the four-year-old is still missing - 100 days after her disappearance.
Madeleine was snatched from her bed in Praia da Luz in May and her parents Gerry and Kate have been tirelessly searching for her ever since.
A special prayer service for Madeleine and other missing children was due to be held this morning at the church in Praia da Luz.
The Catholic Church in the UK will also pray for Madeleine at Sunday Masses this weekend.
In a show of support for Madeleine's parents, who have been subject to criticism over the past week, a lone piper will play a specially commissioned tune at the World Pipe band competition in Glasgow, where Gerry is from.
And in Kate's hometown of Liverpool friends and relatives, including Kate's mother and father, will be distributing posters and promotional materials to shops and members of the public and giving out balloons to children.
Yesterday afternoon the couple helped launch a new channel on the internet site YouTube in a bid to raise awareness of Madeleine and other missing children across the world.
Kate and Gerry said they hoped the site - www.youtube.com/dontyouforgetaboutme - would raise awareness of all the missing children around the world.