CARLA’S TURN: Bulgari has tapped Carla Bruni-Sarkozy to front its haute joaillerie ad campaign, which will break in the second half of the year, according to sources. This will be the first time Bruni appears in a campaign for the Roman jewelry house. The buzz is that France’s former first lady was photographed in Rome this week by Terry Richardson. A Bulgari spokeswoman said the company had no comment.