Analysis of information sources in references of the Wikipedia article "Partlet" in English language version.
Partlet [...] Period: 1500-1550. A sleeveless jacket or merely a covering for the upper part of the chest and neck left exposed by a low-cut doublet, then fashionable.
[...] the style of costume, while generally found in France and Flemish Burgundy during the 1480s, has certain features, such as the woman's partlet in the miniature of Lust (fig. 96), which are most common to Flanders.
[Lady Butts] has on also a white partlet, with black embroidery on the collar, which is often seen in Holbein's portraits, very skilfully managed [...].
[...] a partlet maker, David Courtie owed money for pile and half pile black velvet at £12 the ell.