They defeated Wales 45-0.
Ireland have beaten Wales 45-0 in the Women's Six Nations in Cardiff.
Eimear Considine, Beibhinn Parsons, Dorothy Wall and Hannah Tyrell all crossed the line for the visitors.
Offaly's Nichola Fryday had a strong showing in the second row before being replaced after 57 minutes of the contest.
All eyes now turn to a much more stern test with France next weekend.
In the other contest, England scored nine tries in their 67-3 victory over Italy.