Elizabeth, who died in September 2022 at 96, was the longest-reigning monarch Britain has ever known, and her clothing archive is considered one of the most important collections of 20th-century British fashion. She would have celebrated her 100th birthday on April 21, 2026.

Highlights include a tulle bridesmaid dress worn by an 8-year-old Princess Elizabeth in 1934 and many beautifully tailored couture dresses by the monarch's most influential designer, Norman Hartnell. Hartnell was the man behind an apple-green gown the queen wore for a state banquet given for U.S. President Dwight D. Eisenhower in Washington, D.C., in 1957; a pastel blue gown with a matching jacket that Elizabeth wore for her sister Princess Margaret's 1960 wedding; as well as the queen's own wedding and coronation dresses.