First Minister Carwyn Jones has led Welsh messages of congratulations to the Duke and Duchess of Cambridge.
"Many congratulations to the Duke and Duchess of Cambridge on their wonderful news" he tweeted.
The Leader of the Welsh Conservatives in the Assembly, Andrew RT Davies, also tweeted a message of support, describing the news as "the perfect end to a Jubilee year.
More top news
Hundreds have gathered to attend memorial services across Wales, to mark the 70th anniversary of the liberation of Auschwitz-Birkenau.
Council plans to build new sixth-form college in Cwmbran to serve Torfaen.
Stunning starling ballet captured in the skies over Cardiff Bay