"Skin-nee!" Trading compliments with Star Jones Reynolds on the red carpet, Oprah Winfrey showed off her newly svelte look in a hand-embroidered Vera Wang gown. "Gold is good with my complexion," she said of her dress. And her other secret to looking so good? Two to three Pilates workouts per week. "I did it every day this summer," she told PEOPLE in September. "I'm moving from my core. I move differently. It really has changed my life."