From Wikimedia.
The bodice of this dress is pushed out, probably by pregnancy, so it resembles 1630s dresses with help from the high lace collars.
Keywords: 1649, Lippi, Maria Leopoldine von Österreich-Tirol, Maria Leopoldine (1632-1649), römisch-deutsche Kaiserin, Habsburg family, Archduchess, Empress, proto-hurluberlu coiffure, feathered headdress, necklace, basque bodice, high neckline, lace collar, rosettes, quarter length puffed upper sleeves, long full lower sleeves, lace back-flared cuffs, basque waistline, close over-skirt, handkerchief