There is a similar, almost matching, portrait at Blickling Hall by Henry Shaw identified as "Unknown lady, called Mary Queen of Scots."
Now this is a partlet! She also wears a very tight corset. This charming portrait shows a Lady wearing rolled and fully-puffed sleeves and an elaborately draped necklace.
Keywords: 1560, English, straight coiffure, crescent neckline, escoffion, ruff,rolled sleeves, full puffed sleeves, puffed cloth ornaments, cuffs, vee waistline, partlet, farthingale, kirtle, necklace draped, girdle, bodice ornament, jeweled pendant chain, jeweled pendant, farthingale, gloves, vee wasitline