Dealz has announced it will open 30 fashion outlets in its stores, creating over 120 jobs.
The first 10 of the Pep & Co concessions will open on the same day in flagship stores in Blanchardstown, Kilkenny, Dundrum, Naas, Newbridge, Gorey, Athy, Finglas, Ballina and Castlebar.
Additional shops will then roll out across a further 20 locations - including Killarney, Galway, Letterkenny and Cork.
It is thought these will be open ahead of the summer season.
Dealz says prices will start at €1.50 and that almost 60% of items will be €5.00 or less.
The news comes as part of a wider announcement made by parent company Poundland, as they unveiled plans to open over 150 'shop-in-shop' fashion outlets over the next 12 months in Ireland, the UK and France.
Managing Director at Pep & Co, Adrian Mountford, said: "We are very excited to bring our fashion and brand to Irish consumers.
"We already run 170 Pep & Co stores in the UK, most of them located inside Poundland stores, so introducing Pep & Co to the Irish marketplace via Dealz has always been a priority."
Opening its first store in Ireland in 2011, Dealz now has 61 shops across the country.