The 1981 Eurovision Song Contest winner, who lives near Sevenoaks, cut the ribbon, donating skirts and jackets and helped serve some of the first customers into the shop – and she bought a few items herself.
Also at the opening was Demelza child Bethany Spendlove, 15, and her father Stephen, who live at Ightham, alongside the charity’s trustees, directors and volunteers.
Demelza provides specialist care and emotional support for children with terminal conditions in their homes across East Sussex or in the hospices in Sittingbourne and Eltham.
To find out more about the charity’s work, visit demelza.org.uk