Kate Middleton and Prince William Sport Fancy Headwear for Garter Day Ceremony

Prince George, alas, stayed home.

Kate Middleton supports Prince William at event that marks milestone in their love story

Kate Middleton at Order of Garter Celebration

Kate Middleton's Top Garter Day Fashion Moments

Kate Middleton at Order of Garter Celebration

4,665 Order Of The Garter Photos & High Res Pictures - Getty Images

Kate Middleton Channels 'New Style Inspiration' Diana in Garter Day Fashion

Fans praise Kate Middleton and Prince William as they recreate sweet moment from 2014

Kate Middleton Wears All Blue for Garter Day at Windsor Castle

Prince William Joins King Charles, Queen Camilla for Order of Garter Parade