Clothing Ireland
Here is a - sadly - rather short list of Irish companies that cater to tall(er) ladies. I know that there are quite a few of you out there, but I guess the number is not big enough after all. Hopefully there will be more choice in the future.
The good news is: Most British companies ship to the Republic of Ireland. Also check out the Clothing USA section because a lot of American companies ship internationally these days. Good luck.