my dream graduation dress

i am in year 12 in australia and it is my dream to have a teuta matoshi dress for my graduation. my graduation is in november but the dress needs to be ordered at least two months beforehand.
your help would be greatly appreciated as i don't earn a lot from the job i work and my family cant afford to buy the dress. i am aware that this isn't the worst thing that could happen to me but it is my dream to have a nice dress for graduation.