American Idol runner-up Katharine McPhee might be the wedding singer at Tom Cruise & Katie Holmes' wedding!
It has been reported that Katie Holmes & Katharine McPhee have met at Los Angeles' Church of Scientology. -Hmm, i didn't know Katharine was a Scientologist!-
It seems that the Hollywood couple got in touch with McPhee last week and asked her to perform at their wedding ceremony.