Marketing director Jo Lee said that details had yet to be finalised, but that it was probable that the initiative would involve existing Bravissimo shoppers receiving the calendar online.
Lee said that Bravissimo would not be discounting ahead of Christmas and that the advent calendar was likely to provide details of ranges as well as product offers.
She added that the company would also be unveiling an online wishlist for shoppers to complete and that "someone lucky" would win the contents of their list.
Lee said that trade in the current financial year, which began in September, had proved robust: "We're feeling very confident at the moment. It's been a promising start to the autumn," she said.