Maybe your mother could paint small, two-inch-tall Pipa and Melon portraits on the inside of the hemline, in back? Maybe playing with one another?
(I do not know of wedding traditions in Spain, but here in the US, that location would mean the only time they might be seen is when the garter is removed. Besides, now I have the funniest mental picture of you walking down the aisle, with Pipa and Melon playing underneath your skirt.)