It has been an icon of children's television for six decades.
And Blue Peter marked its 60th anniversary in London on Tuesday by rounding up a plethora of past-presenters to celebrate live on CBBC.
The likes of Helen Skelton, Katy Hill, Richard Bacon, Valerie Singleton, Peter Purves and Konnie Huq joined the series' current hosts - Lindsey Russell and Radzi Chinyanganya - for a special one-hour edition, celebrating the show's title as the longest-running children’s TV series in the world.
It now joins a very select handful of programmes to have been on British television continuously for at least 60 years, including Panorama and The Sky At Night.
Blue Peter began at 5PM on Thursday October 16 1958 - the first episode a brief 15 minutes long.
At the time, it was billed in Radio Times as: 'Toys, model railways, games, stories, cartoons. A new weekly programme for younger viewers with Christopher Trace and Leila Williams.'
Williams stayed with the programme until