BCBG black evening gown

BCBG sweetheart neckline strapless evening gown with custom added beading detail at waist. Black pleated chiffon with nude lining. Attached waist sash ties in long now in back of dress. Only worn twice. Recently steam cleaned and in good condition. Actual dress was never altered, only custom beading was added. Size is marked 12P but I am 5'5 and length was fine with medium heel. Thread loop for sash is torn on one side- very cheap and easy fix for tailor