The artist herself appears reflected in the flagon furthest from the foreground holding up her brushes and palette, while in Still Life with Flowers, Gilt Goblet, Almonds, Dried Fruits, Sweets, Biscuits, Wine and a Pewter Flagon, she can be seen wearing a headdress and ruff reflected in the flagon.
(http://arthistorynewsreport.blogspot.nl/2016/11/the-art-of-clara-peeters.html)