劍橋公爵夫人在2015年5月2日早上出現臨產徵兆，上午6時整前往位於倫敦的聖瑪麗醫院。<ref>[https://twitter.com/KensingtonRoyal/status/594443619081330688 "HRH The Duchess of Cambridge was admitted at 06.00hrs to St Mary’s Hospital, Paddington, London and is in the early stages of labour."]. Kensington Palace (Twitter). 2 May 2015.</ref>2015年格林尼治时间5月2日早上8時34分，凱瑟琳在圣玛丽医院产下一名体重8磅3-{zh-hk:安士;zh-cnhans:盎司;zh-tw:盎司}-（3.71千克）的女婴。<ref>[http://www.mirror.co.uk/usvsth3m/live-royal-baby-been-born-5616424 "Has the Royal Baby been born yet?" YES IT IS A GIRL]. The Mirror. 2 May, 2015.</ref>两天后，肯辛顿宫声明表示剑桥公主命名为'''夏洛特·伊丽莎白·戴安娜'''（Charlotte Elizabeth Diana）。<ref>{{cite news|url=http://www.bbc.com/news/uk-32583432|title=Royal princess named as Charlotte|work=BBC|date=2015-05-04}}</ref>其名字中“夏洛特”（Charlotte）是“查尔斯”（Charles）的女性形式，是为了纪念其祖父[[威爾斯親王查爾斯]]；“伊丽莎白”（Elizabeth）是为了纪念其曾祖母[[伊丽莎白二世]]，“戴安娜”（Diana）则是纪念其已故的祖母[[威尔士王妃戴安娜]]。<ref>{{cite web|url=http://www.dailymail.co.uk/news/article-3067004/Royal-princess-named-Charlotte-Elizabeth-Diana.html|title=Princess is named in honour of her Grandfather, Grandmother and Great-Grandmother: Kate and William announce the very evocative names of their new daughter|work=Daily Mail|date=2015-05-04}}</ref>