All of the Brady kids were supposed to make a grand reunion on 'Today' this morning, but an old sibling rivalry prevented the magic from happening.

Eve Plumb and Maureen McCormick, who played Jan and Marcia respectively on 'The Brady Bunch,' haven't been getting along. When the two learned they would have to share the same stage with each other for more than five minutes, the whole thing broke down.

Some blame the feud over McCormick's seedy tell-all book in which she alleges the two had feelings for each other, but others say the feud goes back much further.