I was a big fan of
Twin Peaks in high school (yes, I'm old), and Audrey Horne was one of my favorite characters. She was a bad girl who dressed like a good girl, in sweaters, plaid skirts and saddle shoes. But she had a sex-kitten quality beneath her demure exterior.
Here are some items that a modern-day Audrey would wear (and if anyone knows where I can find something similar to that fab tree-print cardigan, please let me know).