n. A celebrity who is or is perceived to be unintelligent.
MARIE ANTIONETTE: Sofia Coppola interprets France's last queen as a kind of 18th-century celebutard. Luckily, Kirsten Dunst is a smart enough actress to bring more than that to the Versailles party.
—“Get serious: it's time for movies with meaning,” Los Angeles Daily News, September 17, 2006
At the Docklands Motor Show, I realised Bentley had been chavved. A knot of immaculately dressed, moneyed buyers had gathered around the new GT Continental on its sparkling ExCeL podium. 'It's lovely,' said one, drooling over the car's sleek curves. 'But you couldn't buy one now, could you?' There were knowing nods all round. The GT, you see, is what Wayne Rooney drives. Association with the oiky world of football has put the marque beyond the pale as far as Bentley's top-drawer target market is concerned.

It's an increasingly common occurrence. When at Gucci, Tom Ford saw a picture of Victoria Beckham wearing his designs and reportedly screamed, 'How can we get her out of them?' at his minions. …

Lady Victoria and Lady Isabella Hervey — a right pair of celebutard chavutantes.
—Nick Curtis, “You've been chavved,” The Evening Standard, July 26, 2006
2006 (earliest)
For those still wondering what the world-renowned celebutard is really like in person, the Web site TMZ.com got the full transcript of her deposition with lawyers representing Zeta Graff, who's suing Hilton for $10 million for defamation over her alleged role in a story that appeared on this page.
—“Unedited Paris not cute at all,” New York Post, January 20, 2006
This fine coinage combines celebutante and retard to form a most useful insult in this age of people who are famous only for being famous. The word celebutante was coined in 1939 and is itself a blend of celebrity and debutante; it refers to a person who is a famous socialite.