Taking place in London, Birmingham, Bristol and Liverpool, the events will spread the message of sun safety to young people and will be hosted by Jameela Jamil and Miquita Oliver.
Acts including Chew Lips, Los Campesinos, Summer Camp and I Blame Coco have already been lined up to perform.
Visitors will also be able to get their faces painted by Topshop Make Up and hire roller skates from Sk8 House.
'We are thrilled to be working with Teenage Cancer Trust on such a great campaign. Our audience outreach enables us to educate young people about the importance of sun safety as well as host a fun filled event, showcasing young musical talent and raising funds for a very good cause," said Topshop managing director Mary Homer.
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