The Met Gala might be the most glamorous night of the year—the first Monday in May always brings a certain prestige, with the biggest names in fashion, culture, and celebrity gracing the elaborate staircase—but there is one name that remains off the guest list year after year, despite Anna Wintour ’s best efforts. Inside sources say that the Princess of Wales is Wintour’s dream guest for the annual charity gala, but Princess Kate has “no interest” in attending the dazzling event. Princess Kate had no interest in the red carpet event. (Image credit: Getty Images) Princess Kate and Anna Wintour met previously in 2018. (Image credit: Getty Images) “Kate is the one celebrity Anna wants and cannot get,” an insider told gossip columnist Rob Shuter . The Princess of Wales “is the obsession” for the iconic Vogue editor, who co-chairs and leads in planning the annual event.…