French first lady Carla Bruni-Sarkozy gave birth to a baby girl, the first infant born to a sitting president of modern-day France, the French media reported.There was no official confirmation of the birth. The presidential entourage reiterated earlier Wednesday that no birth announcement would be forthcoming. The couple married in February 2008, less than a year after Sarkozy took office. The first lady has a 10-year-old son from a previous relationship and the president has three sons from his two previous marriages.