Kate Middleton and Meghan Markle famously argued over Princess Charlotte’s bridesmaid dress during the Duchess of Sussex’s wedding, and royal experts think the Princess of Wales struggled to connect with the former actress during her time in the U.K. “It’s something that I could see,” Ingrid Seward told an outlet. “Kate, Harry and [Prince] William were a really close-knit trio. … They all got on really well. And Harry was constantly around at Kensington Palace having supper with them, borrowing things from their fridge.” “Every time he had a new girlfriend, the first person that would meet her…