Sean 'Diddy' Combs' Joins 'Downton Abbey' Season Four?

Sean "Diddy" Combs is the latest addition to the cast of Downton Abbey season four, according to the entertainer himself! "MY BIG NEWS: So happy to announce that Im a series regular on DOWNTON ABBEY-my favorite show+i'll be debuting a sneak peek tonight 12am PST!" Diddy tweeted. "I have to admit that Downton Abbey is