But it looks like the French First Lady isn't hiding her burgeoning belly as she holidays with her husband Nicolas Sarkozy in the south of France.
The former supermodel, 43, showed off her pregnancy curves in all their glory as she relaxed on the beach in a brown bikini.
That's my baby: French President Nicolas Sarkozy gives an admiringly look at his wife Carla Bruni's belly as they sunbathe on the beach in the south of France
Blooming: The French first lady is said to be five-and-a-half months pregnant with her second child
Bruni and her husband, 56, are currently holidaying on the island of Fort de Bregancon, a presidential retreat on the Mediterranean coast.
After arriving last week, the pregnant brunette has been taking things easy, while her husband has been spotted cycling around the fort and driving his wife in a golf cart.
On Sunday afternoon, the couple cosied up together on the beach and looked very affectionate.
Helping hand: Sarkozy comes to the aid of his wife, who was struggling to stand up due to her burgeoning belly
Cool down: The couple cosy up as they enjoy a refreshing dip in the Mediterranean sea
And as the summer temperatures rose, they decided to cool down with a dip in the sea.
But already sporting quite a sizeable bump, Carla need help from her husband as he hoisted her to her feet.
The supermodel clearly found it entertaining that she was struggling to get up without help and giggled with her husband.
While Bruni has not yet officially confirmed her pregnancy, she is believed to be five and a half months pregnant.
Quiet time: The couple relaxed on a deserted beach on the Presidential retreat of Fort De Bregancon
Babymoon: Miss Bruni leans in for a cuddle with her husband as they enjoy their last holiday before the baby arrives
Some reports have claimed the singer/songwriter is expecting twins, but the couple haven't confirmed or denied how many babies they are having.
Sarkozy's father Pal Sarkozy, 82, told German newspaper Bild recently: 'Neither wants to know the gender beforehand, but I'm certain it will be a girl, and beautiful like Carla.'
The baby will be the first together for the couple, who married three years ago following a whirlwind romance.
Private joke: The couple appeared in good spirits as they laughed and cuddled in the surf
Bruni has a 10-year-old son Aurélien from a previous relationship to philosophy profressor Raphaël Enthoven, while Sarkozy has three sons from his first two marriages.
Sarkozy is father to Louis, 14, from his second marriage to Cécilia Ciganer-Albéniz, and Jean, 25, and Pierre, 26, from his first marriage to Marie-Dominique Culioli.
The couple's unborn child will become an aunt or uncle once it's born after Sarkozy's middle son Jean made him a grandfather last year.
Driving in style: Sarkozy driving his wife to the beach from the fort on a golf cart earlier today
Jean, a regional councillor in the French region of Neuilly-sur-Seine, and his wife Jessica Sebaoun-Darty welcomed a baby boy named Solal together in January 2010.
Miss Bruni and Mr Sarkozy began their whirlwind romance after advertising tycoon Jacques Seguela brought them together on a 'blind date' at a dinner party in November 2007.
They married just three months later at a private ceremony in the Elysee Palace on February 2, 2008.
Keeping fit: Sarkozy was spotted cycling around the fort on Monday morning
Dramatic: Sarkozy enjoys a cycle down the steep hills surrounding the Fort de Bregancon
Cover up: Miss Bruni wore a blue shirt as she enjoyed a stroll with Sarkozy on Saturday