I checked wikipedia and neither the Ukrainian or English page mention armour or inspiration beyond the personification of victory, just that it was designed and then redesigned with different artists and models. Draped cloth is not really practical for armor either.
Also it was built by the USSR. I could accept Soviet post-revolutionary art geometric influence as a reason if the rest of the sculpture wasn't so much more precise. The rest of the fabric drapes well enough over more irregular curves.
Sorry would take too long while being bombed and I don't think that is in the budget of the checks several billion dollars sent to Ukraine by the United States. I also want big breasts.
US is not sending Ukraine pallets of money. When they talk about amounts of money, this is just the amount of money the equipment (which was mostly purchased decades ago) is estimated to cost.