Joystiq.com is reporting that the Cavegirls are putting on a Halo 3 tournament in order to raise money to fight breast cancer. "We're talking about The Cavegirls Present: Fight Like a Girl, the Halo 3 tournament where all the proceeds go to fight breast cancer. Taking place on October 20, the only requirements beyond owning a copy of the game, and having an Xbox Live Gold account, is forking over the $10 entry fee."