Carla Bruni welcomes Russian president to state dinner in a daringly tight dress

Former model Carla Bruni's figure is envied by women the world over - and it was brought into sharp focus by her choice of outfit for a state dinner last night.The French First Lady wore a floor-length Roland Mouret gown which was so tight it revealed the exact outline of her slim body - and the fact that she wasn't wearing a bra.Nicolas Sarkozy, the French president greeting his Russian