Need A Mon Cher Gown Size 18 Or 20

I am looking for a discontinued Mon Cheri gown for my daughters up coming wedding in June, 2005 shop accidentally had a discontinued gown on the sample rack and its the one my daughter is is love with.....its Mon Cheri style 00503, very simple gown with box pleats with small pearl and rhinestone clusters in each pleat with rhinestone spaghetti straps. Can anyone help me locate this dress.....