Heidi Montag cancels on White House Correspondents dinner, featuring fellow Republican George W. Bush: "MSNBC had invited Montag to be a guest at its table at the Washington Hilton. 'Then Spencer got involved as her manager,' a source told Page Six. 'He demanded first-class tickets for both him and Heidi - even though he wasn't invited.' When the network balked, Pratt canceled Montag's appearance, claiming, according to our source, 'It wasn't "A-listy" enough.'" [Post]

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