From Wikimedia. Also posted to her Subalbum here.
The eggshell over-skirt is adorned with a gold edge that continues to the bodice and complements the other gold jewelry.
Keywords: 1574, Allori, Isabella de’ Medici, Isabella Ramola de’ Medici, Medici family, Orsini family, Italian, straight coiffure, jeweled headdress, jeweled chignon, earrings, necklace, chemise, fitted jewel-edged over-bodice, vee neckline, collar, lining, floral bodice ornament, draped jeweled bodice ornament, long tight rolled under-sleeves, puffed cloth ornaments, ruffled cuffs, girdle, vee waistline, jewel-edged over-skirt