Oprah Winfrey showed up to congratulate Best Supporting Actress winner Mo’Nique for her work in “Precious” at an Oscar luncheon at Philippe Chow on Saturday. A spy told us, “Oprah and Gayle King sat with Mo’Nique for 45 minutes, laughed and took photos together.” Also at the event presented by MAC Cosmetics and Shondrella Avery was Estee Lauder president John Demsey, who announced a $25,000 grant to AIDS charity Women Alive in Mo’Nique’s name.