Kiernan Shipka sizzled in a strapless mini dress as she stepped out to dinner Thursday night in Los Angeles. The 22-year-old actor showed off her toned legs as she paired the feminine frock with a black shrug and leather ankle boots with a platform heel.The White House Plumbers star carried a black clutch and styled her shoulder-length blonde hair in wavy layers, accessorizing the ensemble with a few gold pendants. Sizzle: Kiernan Shipka, 22, sizzled in a strapless mini as she stepped out to dinner Thursday night in Los Angeles with friend BJ Novak, 43.