Local schoolchildren will bring floral head dresses - made in sessions organised by Waterloo Green Trust - to the green.
There they will have workshops in Flamenco dancing, dance and art and facepainting.
A procession will follow at 3.30pm, with a live steel drum band, also from a local school.
Local residents and workers are invited to come and watch the procession.
Waterloo Millennium Green
Waterloo Road, SE1 7BE
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