A madcap newly married couple are to don their wedding outfits once again - to abseil 120ft down St Paul's Church in Hammersmith.
Jessamy and Keir Shreeves, who tied the knot in May, will undertake the daring task to raise money towards the church's new £5m community centre.
The couple, who met at the church two years ago, have already done a test run in normal clothing ahead of the main event on September 24.
Artist Jessamy, 25, says she and 29-year-old Keir, who quit his job in management to become an assistant pastor at the church, are looking forward to the challenge and decided to do it in their wedding gear because normal clothing wouldn't have been exciting enough.
"I was thinking of doing it in a gold leather cat suit but that would have been too easy - I like a challenge," she said. "I just hope I don't get all my skirts tangled in the rope."
Their instructor Alvin Ng, the church treasurer, says undertaking the challenge in a wedding dress is 'madness'. "It's a particularly tricky building for beginners to climb because of the height and because the stones are so smooth there's very little to grip on to.
"And because the church is grade II listed they can't hammer in any metal hooks. To do it in a wedding dress just seems madness. But they are totally serious."
Vicar Simon Downham is amused by the couple, who, as the tower over looks the A4, could be watched by a potential 20,000 drivers.
"I think they're totally nuts," he said. "You wouldn't catch me doing it but I'll be cheering them on from the safety of the ground."
Their exploits are in aid of a good cause, though, and will go someway towards raising the final £900,000 the church needs to complete the community centre, which is due to open next month.
It will provide much-needed space for the church's many community projects, such as a money advice centre and Spear, a charity praised by Boris Johnson for its success in preparing unemployed youngsters for work, and will also mean the Sunday school classes for the church's 200 children can finally move out of the portacabins they have occupied for the last 10 years.
Jessamy added: "The new building has big open doors and lots of glass to welcome the community to all the brilliant support inside."
About 20 other members of the congregation will also attempt the tower climb, a report of which will be carried in the Chronicle later this month.