Wales lined up its spot in the semi-finals last night, ending the dreams of Ireland's Blarney Army of fans.
The first semifinalists of the competition led from the start and eventually won 22-10.
It was the first time the teams had met in the knockout phase of the tournament and the first time since 1987 Wales has made the final four.
The first semifinal also showed the interest in the Rugby World Cup across the globe with celebrities taking to Twitter to cheer the teams on.
Actor Alec Baldwin came out for Ireland: "Give a shout out 2 Ireland Rugby! Playing Wales 2night!!! Come on Ireland!"