Thanks for the great tips! Today I bought:
two turtleneck sweaters, teal and black.
a funky fly away rust cardigan without bulk/draping in front (because it looks weird under an apron)
a teal fitted buttondown shirt
a dark red tunic sweater.
I can layer camisoles and silk long underwear underneath for warmth and everything will look good with my brown and black straight leg pants. I still need to check my short necklaces since they are the only viable accessory with the apron. Any further advice is welcomed!