I don't Princess Katherine, is that bothered whether people curtsy to her or not. I didn't see anyone curtsy to her. She's a lovely lady , she got far more important things to worry about.
Centre Court Wimbledon holds 15,000 people. When Catherine entered the stadium they rose and gave her a standing ovation, including Julia Roberts and Tom Cruise. Catherine smiled, acknowledged the crowd and took her seat. That's how you do it, no gurning for the cameras.
Love her!! Such an elegant woman with intelligence and kindness in her demeanor. So evident God bless. Stay well. You’re a beautiful example to all Catherine ❤