Vatican City, Apr 22, 2016 / 10:30 am (CNA/EWTN News).- Last year Queen Elizabeth II became the longest reigning monarch in British history, and on Thursday she passed yet another milestone – becoming the first monarch to ever reach the age of 90.

Queen Elizabeth II celebrated her 90th birthday April 21 by unveiling a special plaque on Windsor's Queen's Walkway before lighting the first in a series of beacons marking the special day. Official gun salutes could be heard throughout the U.K.