Previously tweeting under the handle lilyroseallen, Lily - who is thought to be four months pregnant - changed her account name to MrsLRCooper.
Lily is a prolific tweeter, and has a following of over two million fans. She thanked everyone for making her wedding day so special, but has yet to mention her exciting baby news, although who knows what private messages are being exchanged with her pregnant twitter pals Claudia Winkleman and Victoria Beckham?
Suggested For You
Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements. Learn more