If you are in the market for a versatile and attractive pair of flats, go d'orsay. D'orsay flats and heels are feminine and appealing because they show off the narrowest part of the woman's foot. D'orsay refers to the style of shoe.
d'orsay: a pump style shoe or slipper made with a circular vamp and a quarter that curves to meet the vamp at the shank line (Merriam Webster).
What is even more appealing about this shoe is that they are easy to find on a budget. I found a pair similar to these at TJ's for $16.99.
D'orsay flats pair well with skinny pants or jeans as well as dresses and skirts. It's just wondrous when function and fashion meet. Win win!