Back in the late 80s, the ground-breaking ceremony for the Pyramid Arena, "The Big Dig," was attended by as many celebrities as the Memphis glitterati could get. Aykroyd was there along with most of the original band. A nun approached him with matching pairs of sunglasses and asked if he would pose for a picture with her. I can't remember if it was for the local RC hospital or another charity, but the tagline was, "We're on a mission from God." Good on him for doing it. Sorry to say I can't find it online.
Edit: A friend who was there says it's one of those stories that could have happened that way, but they suspect it was another part of Memphis Hoodoo apocrypha. She wants it to be true. So do I.