A charity Zumbathon, held in memory of a woman who lost her battle with pancreatic cancer, raised more than £3,500.
A group of mothers from north London organised the fundraising event on Sunday in aid of Nicki's Smile - a charity founded by Dan Blake in memory of his wife.
Nicki Blake, who lived in Bushey, lost her battle to a rare form of pancreatic cancer known as neuroendocrine in November 2010.
She was 33-years-old and had a three-year-old son, Joshua, when she died.
Mr Blake set up the charity with the aim of raising funds for research into early diagnosis of pancreatic cancer.
The Zumbathon was led by the creator of ZumbaClubNL, Heidi vandenBroek, and a group of other Zumba instructors who gave up their time for free.
More than 50 dancers, families and children took part not only in the main Zumba event, but the face painting and arts and crafts activities that were going on alongside.
Mr Blake said: "I'm delighted the inaugural Nicki's Smile Zumbathon was an incredible success raising over £3,500 for our special cause.
"On behalf of everyone involved with Nicki's Smile I would like to pay a special tribute to organisers Kerry, Leonie, Susie and Stephanie and to Heidi and her team of Zumba instructors. They all helped ensure it was a phenomenal event."
For more information about the charity visit www.nickissmile.com and to donate go to www.justgiving.com/zumbathon2015.
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