Popsugar Celebrity The Royals When Did Prince Will and Kate Middleton Start Having Kids? How Meghan and Harry's Baby Timeline Compares to Will and Kate's October 18, 2018 by Lauren Turner View On One Page Photo 5 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 Kate revealed first signs of her third baby bump in October 2017, weeks after sharing the news that she and William were expecting their third child. Previous Next Start Slideshow The RoyalsKate MiddletonPrince WilliamThe British Royals