PIC: Jen Aniston Flashes Legs in Black Lace Dress

Credit: Marcel Thomas/FilmMagic

She may be "extremely happy" these days, but Jennifer Aniston’s bright mood isn't reflected in her latest outfit.

The 42-year-old actress wore a head-to-toe black ensemble for an appearance on The Daily Show with Jon Stewart in New York City on Monday where she was promoting Horrible Bosses.

However, she did manage to flash her tan and toned legs in the demure lace Nina Ricci dress, which she accessorized with simple peep-toe pumps.

Earlier the same day Aniston opened up ever so slightly about her personal life of late on Good Morning America.

"Yes, I'm very happy," a smiling Aniston said simply. "I'm extremely lucky, and I'm extremely happy."

One major source of that happiness is sure to be Justin Theroux, her new love. Since going public earlier this month, she and the actor-screenwriter, 39, have packed on the PDA in both L.A. and NYC.

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Perhaps their romance will inspire Aniston to go for some more vibrant, sexier looks while she continues to plug her new flick.