Jackie Kennedy | PEOPLE.com

Jackie Kennedy Onassis (left) and Nancy Tuckerman (front center)

Nancy Tuckerman, Jackie Kennedy’s Trusted Aide and Lifelong Friend, Is Dead at 89

Why New York City's Hotel Carlyle Has Been a Celebrity Favorite for 90 Years

Best Books About the Kennedy Family

Read the Wrenching Letter Jackie Kennedy Wrote to RFK’s Wife Ethel After His Death 50 Years Ago

RFK Jr. Reveals the Omens Before His Father's and President Kennedy's Assassinations

PEOPLE Remembers Robert F. Kennedy 50 Years Later with Commemorative Issue

Melania and Donald Trump Are the Rare — But Not ONLY — Presidential Couple to Use Separate Bedrooms

Best Books About the Kennedy Family

From JFK to Aristotle, a Look Back at All of Jackie Kennedy's Loves

Jackie Kennedy Lost Her Virginity in a Paris Elevator — and Her Sister Used it Against Her