I'm also in love with vintage clothing right now - mainly the late 30s through the 50s - so for Christmas I wanted a plaid tafetta dress like this one... but I couldn't find one that I could afford. I decided to sew a circle skirt instead:
this poodle skirt pattern and Made's circle skirt tutorial to make it. Super easy, especially using wide elastic at the top. I threw together a netted slip to wear underneath, but have since ordered a vintage one for my summer dresses.