Hi all, can anyone please help me to buy an outfit for a friend? It was shown in...?

... the Bradley & Stacey wedding episode of Eastenders, and Barbara Windsor wore it. Info' I've managed to find out so far is that it was bought at a store in Es (which has now closed) called Boundary Mills. I've tried all their other stores with no luck. The designer is Joeseph Ribkoff. Extensive net searches have proved fruitless. If you can help then many many thanks to you.