Many of Us default to a tee and jeans on the daily, but Ellen Pompeo opted for a coordinated style that’s comfier, classier and much more versatile. Her black lounge set is what rich moms wear for dinner, travel and beyond, and we found the look on sale for only $15. Run! The Grey’s Anatomy star turned up to a West Hollywood sushi restaurant for a low-key dinner with a friend, and her outfit appeared effortlessly put together. It was comprised o…