The French first lady apparently exposed her lack of underwear in a tight floor-length Roland Mouret gown as she graced the Elysee Palace in Paris.
The 42-year-old model and her husband Nicolas Sarkozy hosted the dinner in honour of Russian President Dmitry Medvedev and his wife Svetlana, The Sun reported.
But not all guests were said to have pulled off elegance at the posh event.
French pop singer Mylene Farmer reportedly took a tumble as she climbed the palace's troublesome steps while the wife of businessman Jean-Francois Cirelli also fell, losing a shoe. (ANI)