The art work of 200,000 children has been projected on to front of the Queen's main residency.
Organised by the Prince's Foundation for Children and the Arts, the project is part of the celebrations making the Queen's Diamond Jubilee year.
Over three nights, the self-portraits were projected onto Buckingham Palace from 8.30pm to 11.30pm and could be seen from a number of central London hotels. The event was an attempt to break the Guinness World Record for the most artists working on the same art installation.
Called Face Britain, the project asked for children aged between four and 16 to send in self-portraits to an online gallery. The work could take any form including drawing, 3D, painting and photography.
There was a strong response to the initiative and over 200,000 images were uploaded to the gallery and at one point more than 1,000 portraits per hour were being submitted.
Guinness World Records will now assess the project and determine if it broke the current record, which is held by an installation in Israel and included the work of 28,267 artists in 2009.
"Face Britain is about empowering children to explore their identity creatively; using the arts to communicate how they see themselves and giving us all a unique snapshot of our country's future generation," said Jeremy Newton, chief executive of the Prince's Foundation for Children and the Arts.
Established by the Prince of Wales, the Prince's Foundation for Children and the Arts was set-up to encourage young people to become involved with and appreciate creative arts. In particular, the charity has focused on encouraging and funding schools in disadvantaged areas to join forces with local art organisations to create a number of projects and schemes.