It seems inevitable, given the amount of weddings those Middleton sisters seem to attend, that the Duke and Duchess of Cambridge would spend their first wedding anniversary anywhere  other than a wedding. And Kate being Kate, attending a wedding means recycling another dress. We  are so used to recycling her outfits now that not only are we no longer surprised, but High street stores and online companies are starting to follow her lead. The dress in question on this occasion was the Erdum navy lace shift dress that was such a success in Canada last July. And, as copies of this style are still available widely, it seems that Kate’s…