The British royal family invited the world into their lives throughout 2018. From weddings to births and from charity at home to trips abroad, these royal stars made the year memorable. Prince Louis and Meghan Markle had a big year with their entrances into the family. Prince Charles reached a milestone by turning 70, and Queen Elizabeth is unstoppable as the world's longest reigning monarch. InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.