Jennifer Aniston knows how to work a LBD!

The sexy star put her hot legs on display last night on the red carpet at the 64th Annual Directors Guild of America Awards in Hollywood -- where she looked gorgeous in a short, black Dolce & Gabbana dress.

Also looking great: Her boyfriend Justin Theroux! Now that he's all clean shaven, the two made quite an attractive pair during the cocktail reception inside. He matched Jen by wearing all black as well.

Of course, they weren't the only big stars in attendance.

George Clooney, Helen Mirren, Sir Ben Kingsley, Kelsey Grammer, Shailene Woodley, the cast of "The Artist," "True Blood" star Deborah Ann Woll and the always sexy Amber Heard were all spotted there as well.

Check out the red carpet fashion above!

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