Popsugar Celebrity And Entertainment Celebrity Facts Kate Middleton's First Royal Moments 22 of Kate Middleton's First Royal Milestones 21 May, 2018 by Marcia Moody View On One Page Photo 4 of 22 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 First Official Engagement Kate attended her first engagement when she accompanied William to a Christmas event for the Teenage Cancer Trust in 2010. Previous Next Start Slideshow Celebrity FactsKate MiddletonThe Royals