Fashion trends come and go, but Queen Elizabeth II's sense of style is timeless.

Her Majesty is set to become the first British Monarch to celebrate a Platinum Jubilee on Feb. 6—meaning she's dedicated 70 years of service to the people of the United Kingdom, the Realms and the Commonwealth. And while Buckingham Palace has already previewed the stacked lineup of celebrations to come, we're honoring the Queen by chronicling her metamorphosis into a style icon.