"You know how you are supposed to have something old? I am having something sewn into her wedding dress that's going to be a big surprise," she said in another interview. "I can't tell you yet, but it's going to be very special." (The bride's sister, Nicky Hilton, also opted for a couture designer (Valentino) for her wedding dress designer of choice when she married James Rothschild in 2015.)