Jennifer Garner sports workout-wear for morning jog before donning little black dress in New York.br br She's taking in the sights during a quick jaunt to the East Coast.br And Jennifer Garner was beaming with endorphins as she returned to her New York hotel following an early-morning run around the city.br The 45-year-old actress later changed into a more revealing ensemble, showing off her toned legs in an adorable little black dress for a stylish event in the Big Apple.