PARTY Delights, the North West online retailer has completed a "strategic merger" with US giant PartyCity, it emerged today.The fast-growing Irlam-based group, which recently launched a German website, was founded in 2001 by Mrs Graham after she struggled to find party clothes for her children.Having originally based at family home, the company now has over 100 staff and sales of more than £12m.Mrs Graham said: "We have had a very exciting 12 years growing the business and are delighted to be taking the next stage of our deve......for the full story register now for free or login below...