The monography describes an unknown miniature of Antonio Ricci (Ancona c.1560 – c.1635). The painting, in oil on cardboard (5,2 x 9,2 cm), is a double portrait of two young girls, Juana and Isabel de Aragòn y Pernstein, daughters of Fernando de Aragòn y Gurrea, fifth Duke of Villahermosa and his wife Juana de Pernstein y Manrique del Lara. The sisters are shown in bust portrait format. They are wearing identical clothes: a red satin dress, with tunic sleeves emerging from underneath, and shoulder rolls ornamented with precious stones. Around their necks they wear wide ruffs, mounted on a silver support with pendant.