Queen Elizabeth II Celebrates Her 90th Birthday With Balloons, Cake, and Dedicated Fans

Thursday marks Queen Elizabeth II's 90th birthday, and her big day is already off to an amazing start. The head of the royal family, who will be celebrating the milestone again in June, stepped out in Windsor, England, on April 21 for her very own "walkabout." Massive crowds gathered to line the streets to get a glimpse of the queen, who is set to partake in a slew of birthday engagements near one of her homes, Windsor Castle. The big outing comes on the heels of the release of the family's new postage stamps, which feature a smiley Prince George, and her own portrait with all of her grandkids. Keep reading to see more from her parade, and then check out what else is in store for the royal family in 2016.