If we needed any more evidence that the lovely future Princess Katherine is a fan of the High Street, we certainly got it yesterday, when Kate added Warehouse to her High Street hot list. Kate has already been spotted  wearing clothes from Topshop, French Connection, L K Bennett and is known to be a fan of TK Maxx. Her official engagement photos showed Kate in the Reiss Nannette dress and the newly named ‘Kate’ blouse from Whistles. Now Kate has enjoyed a pre honeymoon spree at Warehouse on the Kings Road, Chelsea. Kate looked gorgeous  and relaxed during her shopping spree, wearing a black wrap dress with her hair loose.…