A high street retailer has announced that it will be launching the 'cheapest'version of Kate Middleton's dress.

Since Kate Middleton wore the Issa navy dress during the television interview following her engagement to Prince William many versions of the dress have been available on the high street.

The latest is the �14 dress from Peacocks.

The dress will be available in store and online from December 20.

Kate Middleton's navy dress has become the most coveted item of the year.