Vertical flaws in the background and the middle of the right edge were fixed with Photoshop by gogm.
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In the five years since 1623 the ruff is laying down to become a wide collar made of gorgeous lace as shown in this 1628 of Elizabeth Stuart by van Mierveldt.
Shiver me' timbers - does she ever have balloon sleeves. The ruff has almost been replaced by gorgeous collars and a bertha of gorgeous lace. She appears to be wearing a coat and, by association, hanging sleeves.
Keywords: 1628, van Mierveldt, Queen Elizabeth of Bohemia, Stuart family, Wittelsbach family, Princess, Queen, straight coiffure, jeweled headdress, trapezoidal neckline, bertha, collar, lace, bows, waistband, virago sleeves, balloon sleeves, coat, hanging sleeves, necklace, earrings, brooch