In Judith Leyster's Self-Portrait She Portrays Herself as a Confident

In Judith Leyster's Self-Portrait she portrays herself as a confident, accomplished painter, seated in front of her easel working yet taking time to stop work and meet the viewer's eye. Unlike Rembrandt she does not portray herself in a painter's smock. Which of the following would account for this?

A) She wanted to demonstrate her ability to paint the textures of cloth.
B) She wanted to show off her costume.
C) She wanted to indicate her social prominence.
D) Her vanity would not allow herself to be seen in the dull and dirty smock.