Theres a costume shop in Blanchardstown village. I seen those pink ladies jackets up there at Halloween.
Coming into Blanchardstown village from the M50 side, take the left after the Centra on the corner. Go straight up past the church which is on your left. Take a left into the housing estate and I think its the 7th house on your left. Dark Blue coloured. The shop is in the chaps back garden. You enter through the side door. I was up there around Halloween and my brothers been up there since then so i assume its open all year round. Safe bet would be Saturday afternoons as that when we went up.
Ive no contact details. I think its word of mouth advertising??
(The centra is past The Bell, past Don Lorenzo's and it faces The Vineyard pub/restaurant)