From silverstash's photostream on flickr.
Eleonora seems to be wearing a vest bodice and her hanging sleeves hang from it. The vest is closed by buttons framed with frogging. Her collar-ruff appears to emerge from her under-garment, but her vest has a collar of lace triangles.
Keywords: 1572, Allori, straight coiffure, attifet, veil, modesty piece, trapezoidal neckline, vest bodice, collar, neckline ruff, vee neckline, lace, buttons, frogging, rolled sleeves, hanging sleeves, long close false sleeves, back-flared cuffs, necklace, earrings, clasps, bracelets, handkerchief