In some of the best pics we've seen all week, Alicia Keys showed off her nerd chic style as she headed into David Letterman in New York. Wearing a long white cloak and accessorized by a huge envelope clutch, she stepped out to show off her bespectacled glamor. Love it!

Alicia's currently touring to show off her "Super Edition" of her hit album "As I Am," which includes the unreleased song "Savior."