Paris Hilton's Haiti howler

Paris Hilton embarrassed herself by thinking Haiti was in France.The 'House of Wax' star made the faux-pas while signing a deal to promote Ecoist.com - a new eco-friendly accessories company.A source revealed: "The company was hoping Paris would join them in October on a trip to Port-Au-Prince to plant more than 40,000 trees."When she was told about the trip, Paris - who had had no idea where Haiti is - was told they speak French there."When she heard that she replied, 'I wouldn't mind spending a few days there and the weekend in Paris'."It is not the first time Paris' mental ability has come under scrutiny recently.Last week, the blonde socialite told Los Angeles police "she's not that smart".

Paris referred to her poor intelligence while being questioned by detectives investigating the robbery of 'Girls Gone Wild' producer Joe Francis.

During a recorded interview about what happened, she confessed: "I don't remember. I'm not, like, that smart. I, like, forget stuff all the time."

Police were questioning the heiress-turned-actress to see if she remembered what she told Francis at a party shortly after he was targeted on January 24, 2004.