Former Miss Wales Amy Guy, perhaps better known as the ex-Gladiators star Siren, will be part of a group looking to raise money for Parkinson's disease research by jumping out of a plane.
Ms Guy will be one of 14 people hoping to raise at least one pound for each of the 14,000 metres they fall from the aircraft.
The money is to be donated to the charity Parkinson's UK, which is sending its own chief executive Steve Ford and fundraising director Paul Jackson-Clark up to lead the team out of the door.
Ms Guy explained that she wanted to support the charity as Parkinson's disease is an issue very close to her heart.
She explained: "This is the perfect challenge for me because I love extreme sports and the charity means a lot to me because my mum has Parkinson's.
"I can't wait to get up in the air to help Parkinson's UK."
The charity estimates that one in every five hundred people in the UK has Parkinson's disease.
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