Final answer:
Jacqueline Kennedy was known for bringing designer fashion, French cuisine, and grace to the White House, which became iconic of the Kennedy presidency.
Step-by-step explanation:
Among the fashions associated with Jacqueline Kennedy during her time as First Lady were designer dresses, French cuisine at White House events, and a tendency to invite classical artists, all components contributing to an atmosphere of grace and elegance. The public adored this new style introduced into the White House, with the youthful and glamorous Kennedy family embodying optimism and vigor. These fashions and the overall mystique around the Kennedys have since become emblematic of their era and played a significant role in shaping the public image of the presidency.