Peekaboo colored lace: Electric-hued lace is a bold statement, and forgoing a slip in favor of black high-waisted panties and a bra is even more daring. In order for this to work, the lace needs to be more tightly woven than not, leaving less visible skin and more for the imagination. Fergie’s look appeared accidental, while Solange Knowles’ was clearly thought-out and well executed. (Dan MacMedan & Venturelli/WireImage)