There was glamour in abundance at Buckingham Palace tonight as two of the Royal family’s best-dressed ladies hosted a reception to celebrate a new creative initiative, the Commonwealth Fashion Exchange. The , still stylish at seven months pregnant in a patterned guipere lace ensemble from Erdem, was accompanied by the Burberry-clad Countess of Wessex, wife of the ‘s youngest son Prince Edward, to launch the exchange. The British label has emerged as Kate’s new favourite designer despite a string of…