Bangers to cancer was started by Michelle Kent, 35, as a means of spreading their message on the web as fast as possible.
Participants are encouraged to strip to their bra 'take a pic, post it on Facebook and then nominate three others or more,' whilst holding up a sign that directs viewers to their JustGiving page.
Models Brandy Amy Brewer and Elinor Weedon have also shown their support for the campaign by stripping off.
Michelle, who started the campaign, says she's trying to use the Neknominate idea but 'putting it to some good.'
Neknominate is an Australian craze that involves downing large quantities of alcohol and then nominating your friends to outdo you.
Five U.K. men under the age of 30 have died in connection to the game, including rugby player Bradley Eames, 20, who died after drinking two pints of gin.