When I was in London a few years ago, I could have spent the entire day in Marks & Spencer. The only thing that kept me from going broke was the outrageous exchange rate of the dollar (2 dollars = 1 pound). My husband was happy though :-(

This is a lovely inexpensive outfit (even with the exchange rate) from their Autograph Occasions line. Altogether it would set you back around $600 for entire outfit. They do not deliver overseas yet but you can call your british friends and relatives and get them to do your bidding. You can see this outfit on their web site.