Royals Happy Birthday, Prince Louis! All the Cutest Photos from the Little Royal's First Year It's hard to believe it's been an entire year since Kate Middleton and Prince William's latest adorable addition to the royal family arrived By Stephanie Petit Stephanie Petit Stephanie Petit is a Royals Writer/Reporter at PEOPLE. She has been with the brand since 2016 after graduating from The College of New Jersey and holding previous positions at Seventeen, CBS Radio and more. Follow the proud dog mom on Twitter at @stephpetit_ for the latest on Queen Elizabeth's corgis. People Editorial Guidelines Published on April 23, 2019 09:34 AM Share Tweet Pin Email Trending Videos 01 of 14 John Stillwell/PA Wire Prince Louis made his world debut on April 23, 2018. 02 of 14 Just like with their two older children – Prince George or Princess Charlotte – Kate Middleton and Prince William made their first appearance with their baby outside St. Mary's Hospital in London on the steps of the private Lindo Wing. 03 of 14 Just hours after his birth, Louis was in his baby carrier and heading home to Kensington Palace! 04 of 14 Duchess of Cambridge/PA Wire The first portraits of Louis, taken by Princess Kate, were shared with the public just two weeks after he was born on May 7. 05 of 14 Prince Louis and Princess Charlotte. Duchess of Cambridge/PA Wire Charlotte's third birthday was on May 2, 2018, so she joined Louis in the pictures to recreate her first official portrait with big brother George. 06 of 14 PA Images/Sipa The baby's christening took place on July 9, 2018, at the Chapel Royal at St. James’s Palace. 07 of 14 PA Images/Sipa Their high-profile walk into the chapel was the family’s first appearance with all three children. 08 of 14 PA Images/Sipa Prince Louis slept for his big entrance and through much of the greetings before the service began. 09 of 14 PA Images/Sipa Louis wore the same gown — a replica of the Victorian-era garment used in 62 royal christenings— that Charlotte and George did on their respective christenings in 2015 and 2013. 10 of 14 PA Images/Sipa The bond between Kate and Louis was on full display, with the royal mom happily smiling down at her baby boy. 11 of 14 Matt Porteous Family photo time! Louis made his Christmas card debut with a portrait taken in early fall at their country home, Anmer Hall in Norfolk. 12 of 14 PA Images/Sipa In honor of his first birthday, Prince William and Kate released three new photos of their son, taken by the royal mom. 13 of 14 PA Images/Sipa Judging from the pieces of grass covering the little prince's sweater, the outdoor photo shoot at the family's country home in Norfolk, Anmer Hall, doubled as playtime! 14 of 14 PA Images/Sipa Prince Louis also posed in a second outfit – a blue sweater featuring a puppy!