What do Charles Darwin and a Manhattan bikini bar have in common? The great-great-grandson of the man who introduced the theory of evolution, that’s what.

Matthew Chapman, Darwin’s kin, will be the guest speaker July 28 at New York’s fledgling atheist church, The Sunday Assembly.

Held in the Hell’s Kitchen bikini bar Tobacco Road, the Sunday Assembly is the brainchild of London-based stand-up comics Sanderson Jones and Pippa Evans, who are currently busy exporting their sunny brand of atheism to start-up congregations across the United States.

Drawn in by the group’s motto sunny motto, “live better, help often and wonder more,” New York’s first atheist service was attended by roughly 120 godless audience members, organizer Michael Dorian told the Daily News.