Swimming is said to be the best exercise for pregnant women and this holds true at least for French First Lady Carla Bruni.

Now that France's President Nicolas Sarkozy is soon going to be a fourth-time father, his Italian-born wife was photographed revealing her pregnant belly as the couple holidayed at their official retreat, Fort de Bregancon in Bormes les Mimosasand in France, recently.

The supermodel-turned-singer Bruni swam in the sea enjoying her pregnancy.

She has a son from a former relationship. It would be her second child and Sarkozy's fourth, after the three sons he has from two former marriages.

Bruni is believed to be five months pregnant. Check out her latest pictures as she swims in the sea: