Elisabetta Gonzaga's Wikipedia article, with this image, is here.
Image from Wikimedia; spots throughout image removed with Photoshop and image made lighter by gogm.
Elisabetta's dress is scarcely what is often what is thought of as Renaissance dress. It has a simple square neckline with an ornate border decorated with embroidered letters. The rest of her dress is a geometric print in overall subdued colors. Her jewelry is limited to a scorpion-themed ferroniere and simple chain necklaces.
Keywords: 1504, Raphael, Elisabetta Gonzaga, Duchess of Urbino, Gonzaga family, da Montefeltro family, Duchess, Italian, long stright coiffure, ferroniere, square neckline, long full sleeves, necklace