Bill de Blasio Tuesday brushed off New Jersey Gov. Chris Christie's suggestion that New Yorkers chafing at the mayor-elect's tax-the-rich plan should move across the Hudson.

"Governor Christie's latest political stunt doesn't merit a serious response," de Blasio spokeswoman Lis Smith said Tuesday. "New York City is the greatest city in the world and will continue to be under Mayor-elect de Blasio."

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Without mentioning de Blasio by name, Christie on Monday told a room of executives at The Wall Street Journal that "New York is moving in the wrong direction" and that "I do expect us to continue to be more competitive."

Then came the invitation: "While I feel badly for New Yorkers, come to New Jersey."

Democrat de Blasio, the city's public advocate, and Republican Christie, the Garden State's incumbent governor, each won landslide victories earlier this month.

De Blasio has proposed raising taxes on income over $500,000 by a half percentage point in order to expand universal prekindergarten and after-school programs. Christie boasted at the forum that he hasn't raised taxes.