First Ladies tell CNN why they love to tweet

Once upon a time royals and elites had to don elaborate disguises to mingle with their people. Now they have Twitter. Bruni's site, in a typically tongue-in-cheek style that has been criticized by some as pretentious, writes: "Three weeks after NATO, the Sarkozy couple's visit to Spain is once more an opportunity to compare the styles of First Ladies. As with Michelle Obama, it is a beauty contest between Princess Letizia, a former star journalist, and Carla Bruni-Sarkozy, ex-top model. ...