Drop Everything and fight cancers below the waist! is the slogan of Underwear Affair, a fundraising and awareness event initiated in Canada and now reaching Los Angeles and beyond.

People hit the streets of Vancouver, Calgary, Montreal, Toronto and Los Angeles dressed in everything from briefs and boy-shorts to t-shirts and tracksuits to help fund life-saving research for cancers like prostate, colorectal, cervical, ovarian, and others that occur below the waist.

Runners and walkers of all ages and athletic abilities join in dressed for hilarious fun. After the races, the Underwear Affair party features dancing and an outrageous costume contest.

For video of last year’s event in Vancouver …