Imogen Thomas and a group of fellow WAGs donned khaki jumpsuits with a hint of mud to tackle an Army assault course for charity.
The former Big Brother contestant, who dates Jermain Defoe - and others including Lizzie Cundy (wife of Chelsea's Jason), Chantelle Tagoe (Emile Heskey's fiancee) and Melissa Johnson (wife of Birmingham City player Roger) - kicked off their Louboutins to brave the cold and wet in helmets and trainers to scramble support for Sport Relief.
The girls - who crawled under barbed wire and battled rope swings to complete their course - were aiming to encourage people to take part in the Sainsbury's Sport Relief Mile at 16 events across the UK on March 21.
Lizzie said: "A muddy challenging assault course is probably the last place you'd expect to see me and the girls, but although tired and cold, we've had great fun being put through our paces for Sport Relief.
"Now we've shown how it's done, we're asking everyone else to join in the fun and rise to the challenge by getting sponsored to do a Sainsbury's Sport Relief Mile by signing up at sportrelief.com."
The Sport Relief Weekend takes place from March 19 to 21.
Money raised by Comic Relief helps to transform the lives of poor and vulnerable people, in the UK and overseas.