And we're not the only ones who are getting ever so slightly giddy about the thought of a new royal arrival - the celeb world is too.
Find out which famous types were the first to congratulate the Royal couple on Twitter...
Also on HuffPost:
More:Kate Middleton Pregnant Royal Baby Prince William Kate Middleton Baby Prince William And Kate Middleton
Suggested For You
Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements. Learn more