Meghan Markle made a notable appearance at Oprah Winfrey’s book club event in California last night. The Duchess of Sussex was one of several speakers who addressed the crowd at Goodmothers bookstore in Summerland, just a few miles from her Montecito home. The star-studded event attracted a number of high-profile attendees, including actor Marco Leone and author Laura Lynne Jackson. The gathering took place on the eve of the second anniversary of Queen Elizabeth II’s passing, adding a more poignant note to the occasion. Goodmothers bookstore, co-owned by literary agent Jennifer Rudolph Walsh, …