This could only happen in the Anglican Church. From the Anglican Journal

Grannies take it off in support of HIV orphans
Calendar sales help African orphans

Meet Ms. June, Jennifer Davis, one of 12 grandmothers who appear in the Quinte Grannies for Africa calendar. The Grandmothers to Grandmothers campaign will aid grandmothers in Africa. She wore this veil at her wedding on June 19, 1971 at Holy Trinity (Anglican) Church in Toronto.

Twelve grandmothers from the diocese of Ontario have taken off their clothes for a 2009 calendar to raise funds for the Grandmothers to Grandmothers campaign, which helps support African grandmothers who are taking care of their grandchildren orphaned by HIV-AIDS.

I know its succumbing to bribery, but I am willing to make a donation: if the cavorting naked grannies would put their clothes back on.