The Little Black Dress (LBD) is a standard for women of all ages. But this season's scandalous (!) lace versions are appealing to celebs who are young and body-conscious.

Lace makes you sexy while still adding that all-important air of mystery. And, of course, this kind is black: forgiving, flattering, slimming; it hides dirt and there are enough variations so you don't see yourself coming and going.

Burberry model Emma Watson broke with tradition and stepped out in this sexy, and sheer, Rafael Lopez for the premiere of the penultimate Harry Potter film: 'Harry Potter and The Deathly Hallows Part 1,' in London, Nov. 11. With an open back (and did we mention the dress was sheer?) and sexy feather trim, this was a departure from her usual classic look. Perhaps her newly cropped hair is spurring the more mature look?

Though she's just too young (albeit with a great figure) to wear as much black lace as she does, Taylor Swift's classic little black sheath with a lace overlay by Jenny Packham suits her. This dress, worn to the CMT Artists of the Year event on November 30, is one of many little black lace dresses she's worn lately, including this one by Tadashi on the cover of Glamour.

Kirsten Dunst's fitted lacy sheath by Valentino had a little added character with white, ruffled cuffs. The actress chose this not-so-basic black for the premiere of her newest movie, "All Good Things," in New York on Dec. 1.

Tell us which one of these LBDs you like the best.

And check out these celebs rocking Little White Dresses.