It's so easy to put one on, and if you find a classic dress that fits well, you'll probably find yourself wearing it everywhere. At least, I hope you will! I found this one at a secondhand store for nine dollars.
Don't dismiss the feminine joy of wearing a beautiful dress; make a change from stuffing yourself into jeans every day. If you hate dresses, try wearing dress pants or skirts.
My purse and my cardigan are opposite colors: my purse is yellow and my cardigan is purple (if you can tell from the picture). Opposite colors add visual interest because they draw attention to each other.