Marks and Spencer is to create 250 new jobs and invest more than £35m in improvements to its Northern Ireland stores.
M&S is spending £35m on store improvements
The firm's original store in Donegall Place, Belfast, is to be completely redesigned and extended.
Other stores to be extended include the branch at Forestside at Castlereagh and another at Omagh.
Marks and Spencer currently employs 2,000 staff in its 14 stores in Northern Ireland.
The company's divisional executive for Ireland, Neil Hyslop, said the investment would cover seven stores, including three major redevelopments and extensions and a new Simply Food store.
"We are delighted to be reaffirming our commitment to Northern Ireland by investing over £35 million in seven different stores, especially as 2007 marks our 40th year of trading in the province," he said.
"We've recently opened our 14th store at the Abbey Centre in Newtownabbey, which has been extremely well received, and have created a programme for next year that includes a mix of new stores and major redevelopments."
Work will begin early in 2007 and is due to be completed before Christmas 2007.