A striped button-up shirt is a versatile ... In addition to blue and white stripes like Fey and Clarkson wore, it comes in shades like pink, green, and black, plus sizes XS–3X.

Since it's arguably the most versatile top, we did a little online shopping for you and rounded up ... dark blue jeans for the ultimate denim-on-denim ensemble. Everyone needs a great button-down ...