Alicia Keys, famous for her musical abilities and chart-topping hits, has sported a see-through dress outside CBS Studios on Tuesday.

Alicia Keys went to CBS Studios for a taping of her appearance on the Late Show with David Letterman wearing a skin-tight, almost non-existent grey dress.

The NY Daily News dishes: The eleven-time Grammy winner appeared a bit self-conscious, tugging at the hem and pulling the dress down as she chatted with fans and snapped photographs. The dress didn't just show off her Beyonce-esque curves. Her thong - clearly visible from the back - broke one of the fashion world's biggest red-carpet taboos, the panty-line peek-a-boo.

Check out Alicia's rarely-flaunted figure here! What do you think - sexy or skanky?