The latest Madonna wedding rumor has the Material Mom marrying beau Guy Ritchie in a lavish Christmas wedding ceremony in Scotland on Dec. 22. The report comes courtesy of Britain's Sun tabloid, which claims the event will take place at Dornoch Cathedral in northeast Scotland, with the party at a nearby castle. Calls to Madonna's rep were not returned. Meanwhile, the pop diva's first British concert in seven years — held Tuesday night and broadcast live on the Internet — attracted a world-record Webcast audience of nine million, Reuters reports.